Beta Rhythm: Brain waves with frequency between 15-30 Hz seen on EEG during wakefulness and mental activity.Electroencephalography: Recording of electric currents developed in the brain by means of electrodes applied to the scalp, to the surface of the brain, or placed within the substance of the brain.Circadian Rhythm: The regular recurrence, in cycles of about 24 hours, of biological processes or activities, such as sensitivity to drugs and stimuli, hormone secretion, sleeping, and feeding.Nadolol: A non-selective beta-adrenergic antagonist with a long half-life, used in cardiovascular disease to treat arrhythmias, angina pectoris, and hypertension. Nadolol is also used for MIGRAINE DISORDERS and for tremor.Wine: Fermented juice of fresh grapes or of other fruit or plant products used as a beverage.Heart Rate: The number of times the HEART VENTRICLES contract per unit of time, usually per minute.Heart: The hollow, muscular organ that maintains the circulation of the blood.Adrenergic beta-Antagonists: Drugs that bind to but do not activate beta-adrenergic receptors thereby blocking the actions of beta-adrenergic agonists. Adrenergic beta-antagonists are used for treatment of hypertension, cardiac arrhythmias, angina pectoris, glaucoma, migraine headaches, and anxiety.Double-Blind Method: A method of studying a drug or procedure in which both the subjects and investigators are kept unaware of who is actually getting which specific treatment.Insulin-Secreting Cells: A type of pancreatic cell representing about 50-80% of the islet cells. Beta cells secrete INSULIN.Diabetes Mellitus, Type 2: A subclass of DIABETES MELLITUS that is not INSULIN-responsive or dependent (NIDDM). It is characterized initially by INSULIN RESISTANCE and HYPERINSULINEMIA; and eventually by GLUCOSE INTOLERANCE; HYPERGLYCEMIA; and overt diabetes. Type II diabetes mellitus is no longer considered a disease exclusively found in adults. Patients seldom develop KETOSIS but often exhibit OBESITY.Insulin: A 51-amino acid pancreatic hormone that plays a major role in the regulation of glucose metabolism, directly by suppressing endogenous glucose production (GLYCOGENOLYSIS; GLUCONEOGENESIS) and indirectly by suppressing GLUCAGON secretion and LIPOLYSIS. Native insulin is a globular protein comprised of a zinc-coordinated hexamer. Each insulin monomer containing two chains, A (21 residues) and B (30 residues), linked by two disulfide bonds. Insulin is used as a drug to control insulin-dependent diabetes mellitus (DIABETES MELLITUS, TYPE 1).Diabetes Mellitus: A heterogeneous group of disorders characterized by HYPERGLYCEMIA and GLUCOSE INTOLERANCE.Islets of Langerhans: Irregular microscopic structures consisting of cords of endocrine cells that are scattered throughout the PANCREAS among the exocrine acini. Each islet is surrounded by connective tissue fibers and penetrated by a network of capillaries. There are four major cell types. The most abundant beta cells (50-80%) secrete INSULIN. Alpha cells (5-20%) secrete GLUCAGON. PP cells (10-35%) secrete PANCREATIC POLYPEPTIDE. Delta cells (~5%) secrete SOMATOSTATIN.Diabetes Mellitus, Type 1: A subtype of DIABETES MELLITUS that is characterized by INSULIN deficiency. It is manifested by the sudden onset of severe HYPERGLYCEMIA, rapid progression to DIABETIC KETOACIDOSIS, and DEATH unless treated with insulin. The disease may occur at any age, but is most common in childhood or adolescence.Rhode IslandNeurosciences: The scientific disciplines concerned with the embryology, anatomy, physiology, biochemistry, pharmacology, etc., of the nervous system.Osteogenesis, Distraction: Bone lengthening by gradual mechanical distraction. An external fixation device produces the distraction across the bone plate. The technique was originally applied to long bones but in recent years the method has been adapted for use with mandibular implants in maxillofacial surgery.Brain: The part of CENTRAL NERVOUS SYSTEM that is contained within the skull (CRANIUM). Arising from the NEURAL TUBE, the embryonic brain is comprised of three major parts including PROSENCEPHALON (the forebrain); MESENCEPHALON (the midbrain); and RHOMBENCEPHALON (the hindbrain). The developed brain consists of CEREBRUM; CEREBELLUM; and other structures in the BRAIN STEM.Brain Chemistry: Changes in the amounts of various chemicals (neurotransmitters, receptors, enzymes, and other metabolites) specific to the area of the central nervous system contained within the head. These are monitored over time, during sensory stimulation, or under different disease states.Authorship: The profession of writing. Also the identity of the writer as the creator of a literary production.Alloys: A mixture of metallic elements or compounds with other metallic or metalloid elements in varying proportions.Gold Alloys: Alloys that contain a high percentage of gold. They are used in restorative or prosthetic dentistry.Chromium Alloys: Specific alloys not less than 85% chromium and nickel or cobalt, with traces of either nickel or cobalt, molybdenum, and other substances. They are used in partial dentures, orthopedic implants, etc.Voice: The sounds produced by humans by the passage of air through the LARYNX and over the VOCAL CORDS, and then modified by the resonance organs, the NASOPHARYNX, and the MOUTH.Library Collection Development: Development of a library collection, including the determination and coordination of selection policy, assessment of needs of users and potential users, collection use studies, collection evaluation, identification of collection needs, selection of materials, planning for resource sharing, collection maintenance and weeding, and budgeting.Allied Health Occupations: Occupations of medical personnel who are not physicians, and are qualified by special training and, frequently, by licensure to work in supporting roles in the health care field. These occupations include, but are not limited to, medical technology, physical therapy, physician assistant, etc.Book SelectionMetoprolol: A selective adrenergic beta-1 blocking agent that is commonly used to treat ANGINA PECTORIS; HYPERTENSION; and CARDIAC ARRHYTHMIAS.Bisoprolol: A cardioselective beta-1 adrenergic blocker. It is effective in the management of HYPERTENSION and ANGINA PECTORIS.Celiprolol: A cardioselective beta-1 adrenergic antagonist that has intrinsic symopathomimetic activity. It is used in the management of ANGINA PECTORIS and HYPERTENSION.Propanolamines: AMINO ALCOHOLS containing the propanolamine (NH2CH2CHOHCH2) group and its derivatives.Atenolol: A cardioselective beta-1 adrenergic blocker possessing properties and potency similar to PROPRANOLOL, but without a negative inotropic effect.Calcium Channel Blockers: A class of drugs that act by selective inhibition of calcium influx through cellular membranes.Tachycardia, Atrioventricular Nodal Reentry: Abnormally rapid heartbeats caused by reentry of atrial impulse into the dual (fast and slow) pathways of ATRIOVENTRICULAR NODE. The common type involves a blocked atrial impulse in the slow pathway which reenters the fast pathway in a retrograde direction and simultaneously conducts to the atria and the ventricles leading to rapid HEART RATE of 150-250 beats per minute.Evoked Potentials, Somatosensory: The electric response evoked in the CEREBRAL CORTEX by stimulation along AFFERENT PATHWAYS from PERIPHERAL NERVES to CEREBRUM.Somatosensory Cortex: Area of the parietal lobe concerned with receiving sensations such as movement, pain, pressure, position, temperature, touch, and vibration. It lies posterior to the central sulcus.Unconscious (Psychology): Those forces and content of the mind which are not ordinarily available to conscious awareness or to immediate recall.Electric Stimulation: Use of electric potential or currents to elicit biological responses.Brain Mapping: Imaging techniques used to colocalize sites of brain functions or physiological activity with brain structures.Consciousness: Sense of awareness of self and of the environment.Neurofeedback: A technique to self-regulate brain activities provided as a feedback in order to better control or enhance one's own performance, control or function. This is done by trying to bring brain activities into a range associated with a desired brain function or status.Biofeedback, Psychology: The therapy technique of providing the status of one's own AUTONOMIC NERVOUS SYSTEM function (e.g., skin temperature, heartbeats, brain waves) as visual or auditory feedback in order to self-control related conditions (e.g., hypertension, migraine headaches).Imagery (Psychotherapy): The use of mental images produced by the imagination as a form of psychotherapy. It can be classified by the modality of its content: visual, verbal, auditory, olfactory, tactile, gustatory, or kinesthetic. Common themes derive from nature imagery (e.g., forests and mountains), water imagery (e.g., brooks and oceans), travel imagery, etc. Imagery is used in the treatment of mental disorders and in helping patients cope with other diseases. Imagery often forms a part of HYPNOSIS, of AUTOGENIC TRAINING, of RELAXATION TECHNIQUES, and of BEHAVIOR THERAPY. (From Encyclopedia of Human Behavior, vol. 4, pp29-30, 1994)Stroke: A group of pathological conditions characterized by sudden, non-convulsive loss of neurological function due to BRAIN ISCHEMIA or INTRACRANIAL HEMORRHAGES. Stroke is classified by the type of tissue NECROSIS, such as the anatomic location, vasculature involved, etiology, age of the affected individual, and hemorrhagic vs. non-hemorrhagic nature. (From Adams et al., Principles of Neurology, 6th ed, pp777-810)Alpha Rhythm: Brain waves characterized by a relatively high voltage or amplitude and a frequency of 8-13 Hz. They constitute the majority of waves recorded by EEG registering the activity of the parietal and occipital lobes when the individual is awake, but relaxed with the eyes closed.Feasibility Studies: Studies to determine the advantages or disadvantages, practicability, or capability of accomplishing a projected plan, study, or project.PubMed: A bibliographic database that includes MEDLINE as its primary subset. It is produced by the National Center for Biotechnology Information (NCBI), part of the NATIONAL LIBRARY OF MEDICINE. PubMed, which is searchable through NLM's Web site, also includes access to additional citations to selected life sciences journals not in MEDLINE, and links to other resources such as the full-text of articles at participating publishers' Web sites, NCBI's molecular biology databases, and PubMed Central.Periodicals as Topic: A publication issued at stated, more or less regular, intervals.BooksPublishing: "The business or profession of the commercial production and issuance of literature" (Webster's 3d). It includes the publisher, publication processes, editing and editors. Production may be by conventional printing methods or by electronic publishing.MEDLINE: The premier bibliographic database of the NATIONAL LIBRARY OF MEDICINE. MEDLINE® (MEDLARS Online) is the primary subset of PUBMED and can be searched on NLM's Web site in PubMed or the NLM Gateway. MEDLINE references are indexed with MEDICAL SUBJECT HEADINGS (MeSH).Serial Publications: Publications in any medium issued in successive parts bearing numerical or chronological designations and intended to be continued indefinitely. (ALA Glossary of Library and Information Science, 1983, p203)Biological Science Disciplines: All of the divisions of the natural sciences dealing with the various aspects of the phenomena of life and vital processes. The concept includes anatomy and physiology, biochemistry and biophysics, and the biology of animals, plants, and microorganisms. It should be differentiated from BIOLOGY, one of its subdivisions, concerned specifically with the origin and life processes of living organisms.
Anaesthetic/amnesic agents disrupt beta frequency oscillations associated with potentiation of excitatory synaptic potentials in the rat hippocampal slice. (1/161)1. Anaesthetic agents produce disruption in cognitive function typified by reductions in sensory perception and memory formation. Oscillations within the EEG gamma and beta bands have been linked to sensory perception and memory and have been shown to be modified by anaesthetic agents. 2. Synchronous gamma oscillations generated by brief tetanic stimulation in two regions of hippocampal area CA1 in slices in vitro were seen to potentiate excitatory synaptic communication between the areas. This synaptic potentiation, was seen to contribute to a transition from gamma frequency (30 - 70 Hz) to beta frequency (12 - 30 Hz) oscillations. 3. Four drugs having anaesthetic/hypnotic and amnesic properties were tested on this synchronous gamma-induced beta oscillation. Thiopental 10 - 200 microM, Diazepam 0.05 - 1.0 microM, Morphine 10 - 200 microM, and Ketamine 10 - 200 microM were all added to the bathing medium. Each drug markedly disrupted the formation of beta oscillations in a manner consistent with their primary modes of action. Thiopental and morphine disrupted synchrony of gamma oscillations and prevented potentiation of recurrent excitatory potentials measured in stratum oriens (fEPSPs). Neither diazepam, nor ketamine produced such marked changes in synchrony at gamma frequencies or reduction in potentiation of fEPSPs. However, each disrupted expression of subsequent beta oscillation via changes in the magnitude of inhibitory network gamma oscillations and the duration and magnitude of tetanus-induced depolarization respectively. 4. The degree of disruption of fEPSP potentiation correlated quantitatively with the degree of disruption in synchrony between sites during gamma oscillations. The data indicate that synchronous gamma-induced beta oscillations represent a mode of expression of excitatory synaptic potentiation in the hippocampus, and that anaesthetic/amnesic agents can disrupt this process markedly. (+info)
Investigation of nonlinear ECoG changes during spontaneous sleep state changes and cortical arousal in fetal sheep. (2/161)We examined the processes of cortical activation and deactivation of the fetal brain during spontaneous sleep state transitions and during central nervous processing of vibroacoustic stimulations (VASs) using nonlinear analysis of the electrocorticogram (ECoG). Tests of nonlinearity and a random shuffling routine revealed deterministic and nonlinear portions in the fetal ECoG. As common nonlinear measures are not applicable to nonstationary time series, we developed an algorithm to estimate the predictability of the ECoG in its time course by means of a point prediction error (PPE). The ECoG was recorded before and during VAS from the maternal abdominal surface in seven chronically instrumented fetal sheep at 0.8 of gestation. The PPE during REM sleep was significantly higher than during NREM sleep. VAS in NREM sleep resulted in an abrupt increase of the PPE not reaching the level of REM sleep. The steep increase of the PPE at onset and its slow decrease after cessation of the stimulus were very similar to the dynamics of spontaneous sleep state transitions, suggesting the involvement of the same cortical activating mechanisms. In conclusion, the stage and the time course of fetal brain activation and deactivation patterns can be clearly shown by PPE techniques. The PPE is a useful complement to spectral analysis. Both techniques describe different properties of the ECoG. (+info)
Beta activity: a carrier for visual attention. (3/161)The alpha (8-13 Hz), beta (15-25 Hz) and gamma (30-60 Hz) bands of the EEG have been long studied clinically because of their putative functional importance. Old experimental results indicate that repetitive stimulation of the visual pathway evokes synchronous responses at the cortical level with a gain that depends on frequency; oscillations within relevant bands are less damped at subsequent processing levels than others. Our current results show in the cat that cortico-geniculate feedback has a build-in potentiation mechanism that operates at around the beta frequency and activates thalamic cells thus lowering the threshold for visual information transmission. We have also shown that enhanced beta activity is propagated along this feedback pathway solely during attentive visual behavior. This activity consists of 300-1,000 ms bursts that correlate in time with gamma oscillatory events. Beta-bursting activity spreads to all investigated visual centers, including the lateral posterior and pulvinar complex and higher cortical areas. Other supporting data are discussed that are concerned with the enhanced beta activity during attentive-like behavior of various species, including humans. Finally, we put forward a general hypothesis which attributes the appearance of oscillations within the alpha, beta and gamma bands to different activation states of the visual system. According to this hypothesis, alpha activity characterizes idle arousal of the system, while beta bursts shift the system to an attention state that consequently allows for gamma synchronization and perception. (+info)
Origins and distribution of cholinergically induced beta rhythms in hippocampal slices. (4/161)Regional variations and substrates of high-frequency rhythmic activity induced by cholinergic stimulation were studied in hippocampal slices with 64-electrode recording arrays. (1) Carbachol triggered beta waves (17.6 +/- 5.7 Hz) in pyramidal regions of 75% of the slices. (2) The waves had phase shifts across the cell body layers and were substantially larger in the apical dendrites than in cell body layers or basal dendrites. (3) Continuous, two-dimensional current source density analyses indicated apical sinks associated with basal sources, lasting approximately 10 msec, followed by apical sources and basal sinks, lasting approximately 20 msec, in a repeating pattern with a period in the range of 15-25 Hz. (4) Carbachol-induced beta waves in the hippocampus were accompanied by 40 Hz (gamma) oscillations in deep layers of the entorhinal cortex. (5) Cholinergically elicited beta and gamma rhythms were eliminated by antagonists of either AMPA or GABA receptors. Benzodiazepines markedly enhanced beta activity and sometimes introduced a distinct gamma frequency peak. (6) Twenty Hertz activity after orthodromic activation of field CA3 was distributed in the same manner as carbachol-induced beta waves and was generated by a current source in the apical dendrites of CA3. This source was eliminated by high concentrations of GABA(A) receptor blockers. It is concluded that cholinergically driven beta rhythms arise independently in hippocampal subfields from oscillatory circuits involving (1) bursts of pyramidal cell discharges, (2) activation of a subset of feedback interneurons that project apically, and (3) production of a GABA(A)-mediated hyperpolarization in the outer portions of the apical dendrites of pyramidal neurons. (+info)
Multimodal EEG analysis in man suggests impairment-specific changes in movement-related electric brain activity after stroke. (5/161)Movement-related slow cortical potentials and event-related desynchronization of alpha (alpha-ERD) and beta (beta-ERD) activity after self-paced voluntary triangular finger movements were studied in 13 ischaemic supratentorial stroke patients and 10 age-matched control subjects during movement preparation and actual performance. The stroke patients suffered from central arm paresis (n = 8), somatosensory deficits (n = 3) or ideomotor apraxia (n = 2). The multimodal EEG analysis suggested impairment-specific changes in the movement-related electrical activity of the brain. The readiness potential of paretic subjects was centred more anteriorly and laterally; during movement, they showed increased beta-ERD at left lateral frontal recording sites. Patients with somatosensory deficits showed reduced alpha-ERD and beta-ERD during both movement preparation and actual performance. Patients with ideomotor apraxia showed more lateralized frontal movement-related slow cortical potentials during both movement preparation and performance, and reduced left parietal beta-ERD during movement preparation. We conclude that (i) disturbed motor efference is associated with an increased need for excitatory drive of pyramidal cells in motor and premotor areas or an attempt to drive movements through projections from these areas to brainstem motor systems during movement preparation; (ii) an undisturbed somatosensory afference might contribute to the release of relevant cortical areas from their 'idling' state when movements are prepared and performed; and (iii) apraxic patients have a relative lack of activity of the mesial frontal motor system and the left parietal cortex, which is believed to be part of a network subserving ideomotor praxis. (+info)
Long-range synchronization of gamma and beta oscillations and the plasticity of excitatory and inhibitory synapses: a network model. (6/161)The ability of oscillating networks to synchronize despite significant separation in space, and thus time, is of biological significance, given that human gamma activity can synchronize over distances of several millimeters to centimeters during perceptual and learning tasks. We use computer simulations of networks consisting of excitatory pyramidal cells (e-cells) and inhibitory interneurons (i-cells), modeling two tonically driven assemblies separated by large (>or=8 ms) conduction delays. The results are as follows. 1) Two assemblies separated by large conduction delays can fire synchronously at beta frequency (with i-cells firing at gamma frequency) under two timing conditions: e-cells of (say) assembly 2 are still inhibited "delay + spike generation milliseconds" after the e-cell beat of assembly 1; this means that the e-cell inhibitory postsynaptic potential (IPSP) cannot be significantly shorter than the delay (2-site effect). This implies for a given decay time constant that the interneuron --> pyramidal cell conductances must be large enough. The e-cell IPSP must last longer than the i-cell IPSP, i.e., the interneuron --> pyramidal cell conductance must be sufficiently large and the interneuron --> interneuron conductance sufficiently small (local effect). 2) We define a "long-interval doublet" as a pair of interneuron action potentials-separated by approximately "delay milliseconds"-in which a) the first spike is induced by tonic inputs and/or excitation from nearby e-cells, while b) the second spike is induced by (delayed) excitation from distant e-cells. "Long-interval population doublets" (long-interval doublets of the i-cell population) are necessary for synchronized firing in our networks. Failure to produce them leads to almost anti-phase activity at gamma frequency. 3) An (almost) anti-phase oscillation is the most stable oscillation pattern of two assemblies that are separated by axonal conduction delays of approximately one-half a gamma period (delays from 8 to 17 ms in our simulations) and that are firing at gamma frequency. 4) Two assemblies separated by large conduction delays can synchronize their activity with the help of interneuron plasticity. They can also synchronize without pyramidal cell --> pyramidal cell connections being present. The presence of pyramidal cell --> pyramidal cell connections allows, however, for synchronization if other parameters are at inappropriate values for synchronization to occur. 5) Synchronization of two assemblies separated by large conduction delays with the help of interneuron plasticity is not simply due to slowing down of the oscillation frequency. It is reached with the help of a "synchronizing-weak-beat," which induces sudden changes in the oscillation period length of the two assemblies. (+info)
Movement rate effect on activation and functional coupling of motor cortical areas. (7/161)We investigated changes in the activation and functional coupling of bilateral primary sensorimotor (SM1) and supplementary motor (SMA) areas with different movement rates in eight normal volunteers. An auditory-cued repetitive right-thumb movement was performed at rates of 0.5, 0.75, 1, 2, 3, and 4 Hz. As a control condition, subjects listened to pacing tones with no movements. Electroencephalogram (EEG) was recorded from 28 scalp electrodes and electromyogram was obtained from the hand muscles. The event-related changes in EEG band-power (ERpow: activation of each area) and correlation (ERcor: functional coupling between each pair of cortical areas) were computed every 32 ms. Modulations of ERpow and ERcor were inspected in alpha (8-12 Hz) and beta (16-20 Hz) bands. Motor cortical activation and coupling was greater for faster movements. With increasing movement rate, the timing relationship between movement and tone switched from synchronization (for 0.5-1 Hz) to syncopation (for 3-4 Hz). The results suggested that for slow repetitive movements (0.5-1 Hz), each individual movement is separately controlled, and EEG activation and coupling of the motor cortical areas were immediately followed by transient deactivation and decoupling, having clear temporal modulation locked to each movement. In contrast, for fast repetitive movements (3-4 Hz), it appears that the rhythm is controlled and the motor cortices showed sustained EEG activation and continuous coupling. (+info)
Reversibility of the chronic post-stroke state. (8/161)Forty patients with cerebral infarction associated with occlusion of the internal carotid artery (ICA) or the middle cerebral artery (MCA) were treated with hyperbaric oxygenation (HO). EEG analyses were performed regularly in order to assess the course of the cerebral lesion. Patients in an early post-stroke stage (III B) and patients in a chronic post-stroke stage (IV) had the changes in EEG analysis and neurological distributed evenly between these two groups. (+info)
ModelDB: Excessive beta oscillations in Parkinson's disease (Pavlides et al. 2015)
Understanding the generation of beta oscillations is important to improve treatments for Parkinsons disease. Competing theories exist for how these oscillations are generated in the affected brain circuits, which include the motor cortex and a set of subcortical nuclei called the basal ganglia. This paper suggests two hypotheses for the generation of beta oscillations. The first hypothesis is that beta oscillations are generated in the motor cortex, and the basal ganglia resonate to the cortical input. The second hypothesis additionally proposes that feedback from the basal ganglia to cortex is critically important for the presence of the oscillations. We show that the models can successfully account for a wide range of experimental data concerning the presence of beta oscillations in Parkinsons disease ...
Underlying Science - PainQx
Pain studies using electrophysiological recording (EEG, Evoked Potentials (EP) and MEG) demonstrate shifts in the frequency spectrum in the presence of chronic or induced pain, to the theta and beta frequency bands. Source localization of scalp-recorded EEG data Low-Resolution Electromagnetic Tomographic Analysis (LORETA) in patients with intractable unilateral or bilateral neuropathic pain, when compared to pain-free controls identified similar neural activity sources as reported in the literature with conventional neuroimaging methods.. Preliminary data collected at the Brain Research Laboratories, Department of Psychiatry at NYUSOM (under a research contract from PainQx) has been published demonstrating feasibility/proof of concept for an approach which uses QEEG to identify and quantify significant over and under activation of cortical and subcortical regions of interest (ROI) of the brain in a chronic pain population. Using QEEG source localization methods, this published pilot study ...
Frontiers | Modulation of EMG-EMG Coherence in a Choice Stepping Task | Frontiers in Human Neuroscience
The voluntary step execution task is a popular measure for identifying fall risks among elderly individuals in the community setting because most falls have been reported to occur during movement. However, the neurophysiological functions during this movement are not entirely understood. Here, we used electromyography (EMG) to explore the relationship between EMG-EMG coherence, which reflects common oscillatory drive to motoneurons, and motor performance associated with stepping tasks: simple reaction time (SRT) and choice reaction time (CRT) tasks. Ten healthy elderly adults participated in the study. Participants took a single step forward in response to a visual imperative stimulus. EMG-EMG coherence was analyzed for 1,000 ms before the presentation of the stimulus (stationary standing position) from proximal and distal tibialis anterior (TA) and soleus (SOL) muscles. The main result showed that all paired EMG-EMG coherences in the alpha and beta frequency bands were greater in the SRT than the CRT
Family Search for PF11938 (DUF3456)
disruption phenotype: The birth rate of knockout mice on a C57BL/6 background is very low (approximately 10% of pups). The animals appear normal, but their growth after birth is severely retarded. Half of them die by the end of the weaning period. Mutant mice have profoundly impaired T-helper type 1 lymphocyte (Th1)-mediated responses (PubMed:17998391). On a BALB/c background, under resting conditions, they show spastic or dystonic features and, during the open field test, they exhibit hyperactivity and anxiety. Their resting electroencephalography show enhanced activity in the fast beta frequency band (20-35 Hz). They do not show any apparent structural brain anomaly (PubMed:29394991 ...
Brainwaves indicate the presence and severity of Alzheimer's | About memory
Comparison of the EEGs of 27 healthy older adults, 27 individuals with mild Alzheimers and 22 individuals with moderate cases of Alzheimers, has found statistically significant differences across the three groups, using an algorithm that dissects brain waves of varying frequencies.. In particular, delta modulation of the beta frequency band reliably discriminated between healthy controls and mild Alzheimers, and disappeared with an increase in disease severity (from mild to moderate). Increase in disease severity was also marked by the appearance of delta modulation of the theta band.. Its hoped that the algorithm can be used not only to help detect Alzheimers disease early, but also to monitor its progression. The algorithm has been shared on the NeuroAccelerator.org online data analysis portal, to enable it to be used by researchers around the world.. http://www.eurekalert.org/pub_releases/2013-08/i-tae082913.php.  Fraga, F. J., Falk T. H., Kanda P. A. M., & Anghinah R. ...
Burnout syndrome visible in brain activity - Brainclinics
The test subjects participated in various neuropsychological and EEG tests. For example, spontaneous activity was measured in a relaxed state when the subjects quietly had their eyes open and closed. A nice rhythmic and balanced wave pattern was visible in both groups in the form of alpha waves (8-12 Hz waves, which mainly occur with relaxation). However, the peak frequency of this rhythm was lower in the burnout group. This points to a lower willingness or ability to make mental efforts.. The beta rhythm, the fast little brain waves associated with a waking state, were also smaller. According to the researchers, this points to reduced activation of the cortex, the outermost layer of the large brain. In burnout patients there were - unlike those in depression - no differences in frontal EEG activity between the left and right hemisphere.. A second test, in which the participants listened to a series of tones that was occasionally interrupted by a different tone, also showed clear differences ...
The present study provides a series of observations supporting the view that the VM thalamic nucleus is a critical part of the network contributing to the emergence of the exaggerated high-beta range oscillatory activity in the MCx and BG of the hemiparkinsonian rat during treadmill walking. The transition from inattentive rest to treadmill walking induced an increase in high beta range (30-36 Hz) activity in the VM thalamus of the dopamine cell-lesioned hemisphere relative to the nonlesioned hemisphere. This was accompanied by increases in the synchronization of VM spikes to the local and cortical high beta LFP activity and increased coherence between LFP activity in the VM, MCx and SNpr in the same frequency range. In addition, high beta range LFP power and coherence in the MCx and SNpr were dramatically reduced by blocking GABAA receptor-mediated input into the VM through infusion of the GABAA antagonist picrotoxin or by inhibiting VM activity through local infusion of the GABAA agonist ...
MyCNS - Cognitive Neuroscience Society
Response time variability (RTV) during cognitive tasks is an indicator of sustained attention abilities in healthy adults. While brain networks that are related to sustained attention abilities have been identified, the relationship between variance in activity in these networks and RTV has seldom been explored. In the present study, we investigated the relationship between variance in activity in key attentional areas and RTV. Forty-four healthy young adults performed a visual sustained attention task while undergoing electroencephalography. We found that variability in the spectral power of parietal beta oscillations, bilaterally, was positively correlated with RTV, while beta power in right parietal electrodes was negatively correlated with RTV. Moreover, beta power was uncorrelated with beta variability, but multiple regression showed that the two interacted to predict RTV, such that high beta power and low variability were better indicators of low RTV than either measure alone. Given the ...
Conditions for the Generation of Beta Oscillations in the Subthalamic Nucleus-Globus Pallidus Network - Nuffield Department of...
Thalamocortical dynamics underlying spontaneous transitions in beta power in Parkinsonism - Nuffield Department of Clinical...
Movement-related changes in oscillatory activity in the human subthalamic nucleus: ipsilateral vs. contralateral movements.
Behavioural cues are associated with modulations of synchronous oscillations in the human subthalamic nucleus. - Oxford...
The speed with which one reacts to an imperative signal depends on the extent to which preceding cues predict that command. When reliable warning cues are available, the processing of the imperative stimulus can be favoured and responses partially pre-prepared, leading to shorter reaction times. Here we seek evidence for involvement of the human basal ganglia in the exploitation of behaviourally relevant predictive cues. To this end, local field potentials (LFPs) were recorded in the region of the subthalamic nuclei of parkinsonian patients during the performance of a pre-cued reaction task in which the cue either predicted or failed to predict the demands of the imperative signal. We demonstrate that LFP activity in the beta frequency band ( approximately 20 Hz) is modulated by the behavioural relevance of the external cue. The findings suggest that, first, the subthalamic nucleus is involved in mediating or facilitating the response advantage derived from predictive cues in humans and, secondly,
Frontiers | Long-Range Temporal Correlations in Resting State Beta Oscillations are Reduced in Schizophrenia | Psychiatry
Symptoms of schizophrenia (SCZ) are likely to be generated by genetically mediated synaptic dysfunction, which contribute to large-scale functional neural dysconnectivity. Recent electrophysiological studies suggest that this dysconnectivity is present not only at a spatial level but also at a temporal level, operationalized as long-range temporal correlations (LRTCs). Previous research suggests that alpha and beta frequency bands have weaker temporal stability in people with SCZ. This study sought to replicate these findings with high-density electroencephalography (EEG), enabling a spatially more accurate analysis of LRTC differences, and to test associations with characteristic SCZ symptoms and cognitive deficits. A 128-channel EEG was used to record eyes-open resting state brain activity of 23 people with SCZ and 24 matched healthy controls (HCs). LRTCs were derived for alpha (8-12 Hz) and beta (13-25 Hz) frequency bands. As an exploratory analysis, LRTC was source projected using sLoreta. People
Flexible spike timing of layer 5 neurons during dynamic beta oscillation shifts in rat prefrontal cortex - Physiology, Anatomy...
Human brain oscillations occur in different frequency bands that have been linked to different behaviours and cognitive processes. Even within specific frequency bands such as the beta- (14-30 Hz) or gamma-band (30-100 Hz), oscillations fluctuate in frequency and amplitude. Such frequency fluctuations most probably reflect changing states of neuronal network activity, as brain oscillations arise from the correlated synchronized activity of large numbers of neurons. However, the neuronal mechanisms governing the dynamic nature of amplitude and frequency fluctuations within frequency bands remain elusive. Here we show that in acute slices of rat prefrontal cortex (PFC), carbachol-induced oscillations in the beta-band show frequency and amplitude fluctuations. Fast and slow non-harmonic frequencies are distributed differentially over superficial and deep cortical layers, with fast frequencies being present in layer 3, while layer 6 only showed slow oscillation frequencies. Layer 5 pyramidal cells and
ModelDB: H-currents effect on the fluctuation of gamma/beta oscillations (Avella-Gonzalez et al., 2015)
This model was designed to study the impact of H-currents on the dynamics of cortical oscillations, and in paticular on the occurrence of high and low amplitude episodes (HAE, LAE) in network oscillations. The H-current is a slow, hyperpolarization-activated, depolarizing current that contributes to neuronal resonance and membrane potential. We characterized amplitude fluctuations in network oscillations by measuring the average durations of HAEs and LAEs, and explored how these were modulated by trains of external spikes, both in the presence and absence of H-channels. We looked at HAE duration, the frequency and power of network oscillations, and the effect of H-channels on the temporal voltage profile in single cells. We found that H-currents increased the oscillation frequency and, in combination with external spikes, representing input from areas outside the network, strongly decreased the synchrony of firing. As a consequence, the oscillation power and the duration of episodes during which ...
We used LFP recordings from 252-channel ECoG arrays covering large parts of the left hemispheres of two macaques to analyze the interaction between top-down and bottom-up influences, both quantified by GC. Top-down influences were assessed between area 7a at the top of the visual hierarchy and V1 at the bottom. Bottom-up influences were assessed between V1 and V4, a known feedforward pathway carrying stimulus driven input. 7A-to-V1 GC showed a beta-band peak, which did not require visual stimulation and thus was endogenously generated, which was significantly larger in the 7A-to-V1 than the V1-to-7A direction, and which increased with selective attention. V1-to-V4 GC showed a gamma-band peak, which was stimulus driven, which was significantly larger in the bottom-up than the top-down direction, and which also increased with selective attention. JC between top-down beta-band influences and bottom-up gamma-band influences revealed a positive cross-frequency interaction. This interaction was ...
qEEG - aivosähkökäyrätutkimukset (tutkimusmatka, joka sukeltaa aivojen maailmaan)
Best Beer for your Turkey-less Thanksgiving - MittenBrew
Publications | MEDICAL PHYSICS LABORATORY
Graph analysis of sensorimotor cortex functional networks - comparison of alpha vs beta rhythm in motor imagery and execution, Athanasiou, Alkinoos, Foroglou Nicolas, Polyzoidis Konstantinos, and Bamidis Panagiotis , Society of Applied Neuroscience (SAN) & National Initiative Brain & Cognition (NIHC) Meeting 2014, Utrecht, the Netherlands, (2014) ...
Publications | MEDICAL PHYSICS LABORATORY
Graph analysis of sensorimotor cortex functional networks - comparison of alpha vs beta rhythm in motor imagery and execution, Athanasiou, Alkinoos, Foroglou Nicolas, Polyzoidis Konstantinos, and Bamidis Panagiotis , Society of Applied Neuroscience (SAN) & National Initiative Brain & Cognition (NIHC) Meeting 2014, Utrecht, the Netherlands, (2014) ...
Assessing the relative power of structural break tests using a framework based on the approximate Bahadur slope
Downloadable (with restrictions)! We compare the asymptotic relative efficiency of the Exp, Mean, and Sup functionals of the Wald, LM and LR tests for structural change analyzed by Andrews [Andrews, D.W.K., 1993. Tests for parameter instability and structural change with unknown change point. Econometrica 61, 821-856.] and Andrews and Ploberger [Andrews, D.W.K., Ploberger, W., 1994. Optimal tests when a nuisance parameter is present only under the alternative. Econometrica 62, 1383-1414.]. We derive the approximate Bahadur slopes of these tests using large deviations techniques. These show that tests based on the Mean functional are inferior to those based on the Sup and Exp when using the same base statistic. Also, for a given functional, the Wald-based test dominates the LR-based test, which dominates the LM-based one. We show that the Sup- and Mean-type tests satisfy Wieands [Wieand, H.S., 1976. A Condition under which the Pitman and Bahadur approaches to efficiency coincide. Annals of Statistics 4,
QEEG (Quantitative Electroencephalography) - Listen And Learn Centre
The need for more modeling and theory in EEG/qEEG | Owl Talks
Genome-wide association analysis links multiple psychiatric liability genes to oscillatory brain activity<...
TY - JOUR. T1 - Genome-wide association analysis links multiple psychiatric liability genes to oscillatory brain activity. AU - Smit, Dirk J.A.. AU - Wright, Margaret J.. AU - Meyers, Jacquelyn L.. AU - Martin, Nicholas G.. AU - Ho, Yvonne Y.W.. AU - Malone, Stephen M.. AU - Zhang, Jian. AU - Burwell, Scott J.. AU - Chorlian, David B.. AU - de Geus, Eco J.C.. AU - Denys, Damiaan. AU - Hansell, Narelle K.. AU - Hottenga, Jouke Jan. AU - McGue, Matt. AU - van Beijsterveldt, Catharina E.M.. AU - Jahanshad, Neda. AU - Thompson, Paul M.. AU - Whelan, Christopher D.. AU - Medland, Sarah E.. AU - Porjesz, Bernice. AU - Lacono, William G.. AU - Boomsma, Dorret I.. N1 - © 2018 The Authors Human Brain Mapping Published by Wiley Periodicals, Inc.. PY - 2018/11. Y1 - 2018/11. N2 - Oscillatory activity is crucial for information processing in the brain, and has a long history as a biomarker for psychopathology. Variation in oscillatory activity is highly heritable, but current understanding of specific ...
The Eagle's Nest :: Stevensville, Michigan :: An Empirical Investigation Into the Effect of Beta Frequency Binaural-beat Audio...
Product: Understanding Phenotypes and Clinical Subtypes to Use qEEG More Effectively in Planning Neurofeedback | Futurehealth
Product: Understanding Phenotypes and Clinical Subtypes to Use qEEG More Effectively in Planning Neurofeedback - Product: Futurehealth WinterBrain 20 minute plenary presentation by Jay Gunkelman. Abstract: The clinical use of EEG / qEEG is rapidly expanding since the acceptance of the clinical application of qEEG in 1994. This talk will provide a survey of various approaches to diagnosis and treatment planning, as well as having a depth discussion of the phenotype approach for predicting interventions based on EEG/qEEG data.
Assessment and Evaluation | QEEG Testing | QEEG Brain Mapping - Reintegrative Health | St. Louis Neurotherapy | Neurofeedback |...
Category: Brain Mapping/QEEG - BELLABEE
Normal frequencies of the human brain associated states are shown below. These frequencies can be picked up by an EEG (Electroencephalogram) from the surface of the brain, after their amplification, as they are in the range of micro-volts. A mixture of these frequencies is present at any given time. Quantitative Electroencephalography (QEEG) is an extension of the analysis of the visual EEG interpretation which may assist and even augment our understanding of the EEG and brain function. QEEG is a procedure that processes the recorded EEG activity from a multi-electrode recording using a computer and converts it into a brain map showing different brain waves ...
Search | The Embryo Project Encyclopedia
In the article "The History of Twins, As a Criterion of the Relative Powers of Nature and Nurture," Francis Galton describes his study of twins. Published in 1875 in Frasers Magazine in London, England, the article lays out Galtons use of twins to examine and distinguish between the characteristics people have at birth and the characteristics they receive from the circumstances of life and experience. Galton calls those factors nature and nurture. Based on his study, Galton concluded that nature has a larger effect than nurture on development.. Format: Articles Subject: Publications ...
Clinical advantages of quantitative electroencephalogram (QEEG)-electrical neuroimaging application in general neurology...
QEEG-electrical neuroimaging has been underutilized in general neurology practice for uncertain reasons. Recent advances in computer technology have made this electrophysiological testing relatively inexpensive. Therefore, this study was conducted to evaluate the clinical usefulness of QEEG/electric …
Objective: Local field potential (LFP) oscillations in the 13-30 Hz frequency band are related to the pathophysiology of the basal ganglia of Parkinsons disease with beta activity in LFP being reduced in PD patients during movement or following medication. The current study was performed[for full text, please go to the a.m. URL ...
Trauma & Stenosis - OtoRhinoLaryngology Portal
Features of bioelectric activity of the brain in patients with diff erent forms of migraine
The article deals with the study of bioelectric activity of the brain in patients with various forms of migraine, complicated by status migrainosus. The EEG-mapping was performed for 32 patients with diff erent forms of migraine. The EEG registration was carried out between the attacks. Patients were calm and active and performed functional tests. The following frequency ranges were analyzed: delta rhythm, theta rhythm, alpha rhythm, beta rhythm. The spectral powers of the rhythms in the frontal, parietal, temporal, occipital regions of the cerebral hemispheres were evaluated. The results of EEG-mapping showed that patients with diff erent forms of migraine demonstrated a decrease in reactivity of the cerebral cortex as per fast-wave indices, which was even more prominent in a group of patients with migraine without aura, as well as the activation of slow-wave activity in these patients. Analysis of the data of cartograms shows that activation of slow-wave ranges and alpha frequency inhibition ...
DiVA - Search result
The relationship between the electro-encephalographic (EEG) alpha and beta oscillations in the resting condition was investigated in the study. EEGs were recorded in 33 subjects, and alpha (7.5-12.5Hz) and beta (15-25Hz) oscillations were extracted with the use of a modified wavelet transform. Power, peak frequency and phase synchronisation were evaluated for both types of oscillation. The average beta-alpha peak frequency ratio was about 1.9-2.0 for all electrode derivations. The peak frequency of beta activity was within 70-90 % of the 95 % confidence interval of twice the alpha frequency. A significant (p , 0.05) linear regression was found between beta and alpha power in all derivations in 32 subjects, with the slope of the regression line being approximate to 0.3. There was no significant difference in the slope of the line in different electrode locations, although the power correlation was strongest in the occipital locations where alpha and beta oscillations had the largest power. A ...
Brain Waves: synchronisation of tetanically evoked gamma rhythms (2)
Cortical oscillations at gamma (30-100 Hz) and beta (10-30 Hz) frequencies are implicated in cognitive tasks. Gamma and beta oscillations evoked in the hippocampal slice in vitro by tetanic stimulation can be synchronised with phase lags faster than the conduction delays expected from the distance between the stimulating electrodes. This led Traub to develop an innovative model based on networks of fast synapses using glutamate and GABA as their transmitters. While this theoretical model is feasible on the basis of the known cellular and network properties of the hippocampus, and may well apply under some experimental circumstances, we now have doubts on its application to tetanically evoked gamma rhythms because of: (1) the spatial extent of the gamma focus means that the actual distance between the oscillating populations is much less than the distance between the two stimulating electrodes (typically ~1-2mm), and (2) new evidence and ideas on the mechanism of tetanically-evoked gamma ...
A Pause-then-Cancel model of Stopping | Philosophical Transactions of the Royal Society B: Biological Sciences
Many studies have implicated the basal ganglia in the suppression of action impulses (stopping). Here, we discuss recent neurophysiological evidence that distinct hypothesized processes involved in action preparation and cancellation can be mapped onto distinct basal ganglia cell types and pathways. We examine how movement-related activity in the striatum is related to a Go process and how going may be modulated by brief epochs of beta oscillations. We then describe how, rather than a unitary Stop process, there appear to be separate, complementary Pause and Cancel mechanisms. We discuss the implications of these stopping subprocesses for the interpretation of the stop-signal reaction time-in particular, some activity that seems too slow to causally contribute to stopping when assuming a single Stop processes may actually be fast enough under a Pause-then-Cancel model. Finally, we suggest that combining complementary neural mechanisms that emphasize speed or accuracy respectively may ...
Temporal alignment of anticipatory motor cortical beta lateralisation in hidden visual-motor sequences. - Wellcome Centre for...
Performance improves when participants respond to events that are structured in repeating sequences, suggesting that learning can lead to proactive anticipatory preparation. Whereas most sequence-learning studies have emphasised spatial structure, most sequences also contain a prominent temporal structure. We used MEG to investigate spatial and temporal anticipatory neural dynamics in a modified serial reaction time (SRT) task. Performance and brain activity were compared between blocks with learned spatial-temporal sequences and blocks with new sequences. After confirming a strong behavioural benefit of spatial-temporal predictability, we show lateralisation of beta oscillations in anticipation of the response associated with the upcoming target location and show that this also aligns to the expected timing of these forthcoming events. This effect was found both when comparing between repeated (learned) and new (unlearned) sequences, as well as when comparing targets that were expected after short vs.
Spectral analysis of canine epicardial electrogram. Short-term variations in the frequency content induced by myocardial...
Power spectra of epicardial electrograms were studied in 13 anesthetized dogs subjected to occlusion of the left anterior descending coronary artery. Electrograms were obtained from a bipolar electrode placed on the epicardial surface of the left ventricle and recorded before and after coronary occlusion. After digitization, power spectra of the first and every 50th subsequent waveform were evaluated and compared with the power spectrum of the average waveform obtained from the baseline recording. In particular, we examined variations in relative power content in three frequency ranges: 150-250 Hz, previously shown to be directly affected by myocardial ischemia; 40-150 Hz, presumably corresponding to the fine notches and slurs on the body surface QRS; and 2-40 Hz, the low-frequency range. Apart from a mild initial rise during the first 50 heart beats, the power in the high-frequency range gradually decreased, reaching 5% of the control value at wave 500. The power in the mid-frequency range ...
Best ten Relaxation Advantages: The way Does indeed Deep breathing Assist The Human Physique? | kathy grover real estate agent...
When the mind enters a meditative state, one of the rewards of meditation is that the mind has truly "shifted gears" from a "active head of Beta frequency" down to a peaceful, relaxed condition of Alpha, Theta or for deep meditation, Delta. Our bodies automatically reply to each brainwave frequency (of Beta, Alpha, Theta or Delta) and turn out to be nervous or anxious (in Beta) or relaxed and peaceful (in Alpha.) Simple meditation tactics this sort of as brainwave meditation automatically place the mind into different states, as a result directing the physique to answer accordingly and generate suitable substances.. Best Gain #five: Enhanced Psychological ...
Psychophysiology: GUISLAIN GROUP: Gent Z score Loreta Neurofeedback and qEEG workshop 11-13 July 2013
Perception and Consciousness
UIT-R SG06 C
QEEG (Quantitative Electroencephalography) - Christopher Fisher, PhD
US8923981B2 - Non-regular electrical stimulation patterns designed with a cost function for treating neurological disorders ...
Systems of and methods for stimulation of neurological tissue that may generate stimulation trains with temporal patterns of stimulation is shown and disclosed herein. The temporal patterns of stimulation may include intervals between electrical pulses (the inter-pulse intervals) that change or vary over time. Compared to conventional continuous, high rate pulse trains having regular (i.e., constant) inter-pulse intervals, the non-regular (i.e., not constant) pulse patterns or trains that embody features of the invention may provide a lower average frequency.
Blood glucose changes and memory: Effects of manipulating emotionality and mental effort - ePrints - Newcastle University
Any tips to try to prevent leakage. - Prostate Cancer - HealingWell.com Forum
Food for thought....Power of Suggestion?!?. At my first post surgery visit with my surgeon (3 months) he asked me about leakage. I mentioned I used 1 to 2 pads per day. He said he wanted my off the pads by the next visit in January...I thought it was strange cause I didnt think I had a say in the matter. Two days later on Saturday morning, I thought Id give a no pad day a try. And for what ever reason, I havent used one since. It kind of forced to me to make a mental effort to not leak when I stood up etc.... ...
I will lift up mine eyes unto the hills, from whence cometh my help. : IT SNEAKS UP ON YOU
Do you ever have the feeling that things are not quite going according to plan? You begin to wonder if you have Carb creep. Youve been doing well but suddenly it seems as though the edges are blurred. Something is missing. Whatever it is, you feel as though you are not as focussed as you should be and its really hard to break away from.... for me at least. It takes a lot of mental effort and lifes day to day needs are still there relentless and demanding. We cant go and hide in a cave and work things out. We have to do it on the run. Theres no peaceful retreat to go to where we can be refreshed, re-charged and restored ...
portland imc - 2005.12.20 - Microwave Weaponry and Covert Government Harassment Used on Many Average Americans
As you know, the state of ones mind may be measured by the state of their brainwaves. Higher-frequency beta waves indicate wakeful alertness, lower alpha waves indicate daydreaming and relaxation, and even lower delta waves indicate deep sleep. Now, knowing this, what happens if you can employ a simple concept in physics called entrainment. Entrainment means that things naturally fall into rhythm with each other -- for example, if you put two grandfather clocks up against the same wall, it wont be long before their pendulums become synchronized. Well, it turns out that if you beam certain frequencies at the brain, the brain will tend to fall into rhythm with these frequencies. So, theoretically, you could make that person sleepy, dreamy, alert or else put them in a state of nervous agitation by beaming the frequencies corresponding to delta, alpha, beta or high beta frequencies ...
Parametric analysis of oscillatory activity as measured with EEG/MEG. - Semantic Scholar
We assess the suitability of conventional parametric statistics for analyzing oscillatory activity, as measured with electroencephalography/magnetoencephalography (EEG/MEG). The approach we consider is based on narrow-band power time-frequency decompositions of single-trial data. The ensuing power measures have a chi(2)-distribution. The use of the general linear model (GLM) under normal error assumptions is, therefore, difficult to motivate for these data. This is unfortunate because the GLM plays a central role in classical inference and is the standard estimation and inference framework for neuroimaging data. The key contribution of this work is to show that, in many circumstances, one can appeal to the central limit theorem and assume normality for generative models of power. If this is not appropriate, one can transform the data to render the error terms approximately normal. These considerations allow one to analyze induced and evoked oscillations using standard frameworks like statistical
Nociceptive local field potentials recorded from the human insula are not specific for nociception :: NOCIONS lab
Kopell, N.; Ermentrout, G. B.; Whittington, M. A.; Traub, R. D. (15 February 2000). "Gamma rhythms and beta rhythms have ... She is currently Director and Co-Founder of the Cognitive Rhythms Collaborative, which consists of a group of over two dozen ... "People: Faculty". Cognitive Rhythms Collaborative. Boston University. Retrieved 20 August 2015. Trottier, Leo (21 October 2011 ... Nancy Kopell's home page at BU Nancy Kopell's Publications Cognitive Rhythms Collaborative CompNet Neural Dynamics Group (NaK ...
... of music-brain interaction with simultaneous measurement of regional cerebral blood flow and electroencephalogram beta rhythm ... Buszaki G (2006). Rhythms of the brain. Oxford University Press. Nyhus, E; Curran T (June 2010). "Functional role of gamma and ... Thaut, M.H., Schleiffers, S., and Davis, W.B., Changes in EMG patterns under the influence of auditory rhythm. In Spintge, R. ... This tendency has been identified as specifically pertinent to the study of sound and music generally, and acoustic rhythms ...
... used for the symptomatic treatment of chronic stable angina pectoris in patients with normal sinus rhythm who cannot take beta ... It may be as effective as the beta blocker atenolol and comparable with amlodipine in the management of chronic stable angina. ... It is used in combination with beta blockers in people with heart failure with LVEF lower than 35 percent inadequately ... This is in contrast to other commonly used rate-reducing medications, such as beta-blockers and calcium channel blockers, which ...
Journal of Neuroscience 30(35):11670-7 Ritter, P., Moosmann, M., Villringer, A. (2009). Rolandic alpha and beta EEG rhythms' ... 1996), combined EEG / fMRI to show fMRI correlates of background rhythms (Moosmann et al. 2003, Ritter et al. 2009) and ... Correlates of alpha rhythm in functional magnetic resonance imaging and near infrared spectroscopy. Neuroimage. 20(1):145-58 ...
Inappropriate sinus tachycardia
The heart is a strong muscle and typically can sustain the higher-than-normal heart rhythm, though monitoring the condition is ... This approach is very much "trial-and-error". Patients with IST are often intolerant to beta blockers. A new selective sinus ... Some types of medication tried by cardiologists and other physicians include: beta blockers, selective sinus node If channel ... An autoimmune mechanism has been suggested as several studies have detected autoantibodies that activate beta adrenoreceptors ...
List of MeSH codes (E01)
... alpha rhythm MeSH E01.370.376.300.125 --- beta rhythm MeSH E01.370.376.300.150 --- cortical synchronization MeSH E01.370. ... alpha rhythm MeSH E01.370.405.245.125 --- beta rhythm MeSH E01.370.405.245.150 --- cortical synchronization MeSH E01.370. ... 405.245.175 --- delta rhythm MeSH E01.370.405.245.700 --- theta rhythm MeSH E01.370.405.250 --- electrokymography MeSH E01.370. ... 376.300.175 --- delta rhythm MeSH E01.370.376.300.700 --- theta rhythm MeSH E01.370.376.500 --- magnetoencephalography MeSH ...
... including mu and beta rhythms. A non-inclusive list of types of oscillatory activity found in the central nervous system: Delta ... Oscillatory rhythms at 10 Hz have been recorded in a brain area called the inferior olive, which is associated with the ... These ongoing rhythms can change in different ways in response to perceptual input or motor output. Oscillatory activity may ... Theta rhythms are very strong in rodent hippocampi and entorhinal cortex during learning and memory retrieval, and they are ...
... , or beta rhythm, is a neural oscillation (brainwave) in the brain with a frequency range of between 12.5 and 30 Hz ( ... Low Beta Waves (12.5-16 Hz, "Beta 1 power"); Beta Waves (16.5-20 Hz, "Beta 2 power"); and High Beta Waves (20.5-28 Hz, "Beta 3 ... the role of the cortical sensorimotor beta rhythm". Neuroscience. 156 (1): 238-46. doi:10.1016/j.neuroscience.2008.06.061. PMC ... Bursts of beta activity are associated with a strengthening of sensory feedback in static motor control and reduced when there ...
Neuroscience of rhythm
It was concluded that PTNs in the motor cortex directly influence the generation of Beta rhythms. At the moment, recording ... "The rhythm of a game of basketball emerges from the rhythm of individuals, the rhythm among team members, and the rhythmic ... This is rhythm in its most obvious form. Human beings have an innate ability to listen to a rhythm and track the beat, as seen ... The neuroscience of rhythm refers to the various forms of rhythm generated by the central nervous system (CNS). Nerve cells, ...
... but some literature suggests a dysregulation of the circadian rhythm based on core temperature. Increased beta activity and ... Disturbances of the circadian rhythm, such as shift work and jet lag, can cause an inability to sleep at some times of the day ... Chronic circadian rhythm disorders are characterized by similar symptoms.. *Certain neurological disorders, brain lesions, ... parasomnias and circadian rhythm disorders". Journal of Psychopharmacology. 24 (11): 1577-1601. doi:10.1177/0269881110379307. ...
Medications for a fast heart rate may include beta blockers or agents that attempt to restore a normal heart rhythm such as ... The initial heart rhythm is most often ventricular fibrillation. The diagnosis is confirmed by finding no pulse. While a ... Electrophysiologists work closely with other cardiologists and cardiac surgeons to assist or guide therapy for heart rhythm ... Treatment for cardiac arrest is immediate cardiopulmonary resuscitation (CPR) and, if a shockable rhythm is present, ...
Medications for a fast heart rate may include beta blockers or agents that attempt to restore a normal heart rhythm such as ... The resulting heart rhythm depends on where the first signal begins: If it is the sinoatrial node, the rhythm remains normal ... it can produce a sustained abnormal rhythm. Rhythms produced by an ectopic focus in the atria, or by the atrioventricular node ... A slow rhythm (less than 60 beats/min), is labelled bradycardia. This may be caused by a slowed signal from the sinus node ( ...
Beta-amiloide, a enciclopedia libre
Volicer L, Harper D, Manning B, Goldstein R, Satlin A (2001). "Sundowning and circadian rhythms in Alzheimer's disease". Am J ... Beta-amiloide ou amiloide-beta (Aβ ou Abeta) é o termo con que se designan os péptidos de 36 a 43 aminoácidos que están ... Medición do amiloide beta[editar , editar a fonte]. Micrografía que mostra o amiloide beta (castaño) en placas senís do córtex ... Ritmo circadiano do amiloide beta[editar , editar a fonte]. Un informe de 2009 demostrou que a produción de amiloide beta segue ...
Colours (Hot Chip song)
Beta movement Phi phenomenon Edward Aiello and Michael A Sleigh (1972) The metachronal wave of lateral cilia of Mytilus edulis ... Metachronal rhythms may be seen in the coordinated movements of the legs of millipedes and other multi-legged land ... Play media A metachronal rhythm or metachronal wave refers to wavy movements produced by the sequential action (as opposed to ...
RAR-related orphan receptor gamma
REV-ERBalpha and beta and non-essential role for Bmal1 cycling in transcriptional regulation of intracellular circadian rhythms ... The RORγ isoform appears to be involved in the regulation of circadian rhythms. This protein can bind to and activate the ... Absent protein in previous studies may be due to the high amplitude circadian rhythm of expression of this isoform in some ... Journal of Biological Rhythms. 20 (5): 391-403. doi:10.1177/0748730405277232. PMID 16267379. Preitner N, Damiola F, Lopez- ...
... such as beta blockers or calcium channel blockers) and/or rhythm control with class III antiarrhythmics (such as ibutilide or ... J commonly being enough to cause a return to a normal heart rhythm (sinus rhythm). Exact placement of the pads does not appear ... Because both rhythms can lead to the formation of a blood clot in the atrium, individuals with atrial flutter usually require ... Both rhythms can be associated with dangerously fast heart rates and thus require medication to control the heart rate ( ...
Carl H. Johnson
Society for Research on Biological Rhythms Phi Beta Kappa Society Michael Menaker Circadian rhythms Chronobiology Cyanobacteria ... Published first paper on circadian rhythms in cyanobacteria 1995 - pres: Serves as a member of Journal of Biological Rhythms' ... President of Society for Research on Biological Rhythms President of the Society for Research on Biological Rhythms (2012-2014 ... showed evidence of daily bacterial circadian rhythms (with circa-24 hour cycles). Synechococcus expressed free-running rhythms ...
The Beta Band (album)
Based more-so around beat and rhythm than prior releases, the numerous different styles and influences incorporated into The ... "The Beta Band: The Beta Band". Q (155): 102. August 1999. Sheffield, Rob (8 July 1999). "The Beta Band: The Beta Band". Rolling ... Sullivan, Caroline (18 June 1999). "Beta by far". The Guardian. Mabbott, Alastair (10 June 1999). "The Beta Band: The Beta Band ... Ewing, Tom (17 October 1999). "MESSTHETICS: The Beta Band - The Beta Band". FreakyTrigger. Retrieved 27 May 2017. "The Beta ...
Long QT syndrome
These include administration of beta receptor blocking agents, which decreases the risk of stress-induced arrhythmias. Beta ... 2013). "The phenotype characteristics of type 13 long QT syndrome with mutation in KCNJ5 (Kir3.4-G387R)". Heart Rhythm. 10 (10 ... It involves mutations in the gene KCNE1, which encodes for the potassium channel beta subunit MinK. In its rare homozygous ... It involves mutations in the gene KCNE2, which encodes for the potassium channel beta subunit MiRP1, constituting part of the ...
Reina Akatsuki Girl Friend Beta - Michiru Tomura Witch Craft Works - Touko Hio Pretty Rhythm: All-Star Selection - Aira Harune ... Saori Maki Pretty Rhythm Aurora Dream - Aira Harune Tamayura: hitotose - Kaoru Hanawa The World God Only Knows II - Chihiro ... Fumi Hibino Pretty Rhythm: Dear My Future - Aira Harune Hidamari Sketch Honeycomb - Yuno Ebiten: Kōritsu Ebisugawa Kōkō ...
Beta wave - (16 - 31 Hz) Gamma wave - (32 - 100 Hz) Arroyo, S.; Lesser, RP.; Gordon, B; Uematsu, S; Jackson, D; Webber, R (1993 ... The sensorimotor rhythm (SMR) is a brain wave. It is an oscillatory idle rhythm of synchronized electric brain activity. It ... The feline SMR has been noted as being analogous to the human mu rhythm. Neurofeedback training can be used to gain control ... 3rd edition, Williams & Wilkins Baltimore 1993 "Morphological evidence that feline SMR and human Mu are analogous rhythms". ...
Sighs, on the other hand, consist of a slow and large amplitude rhythm. Each type of rhythm is generated by the same neurons in ... They are found within the pre-BötC and act via alpha-1, alpha-2, and beta-noradrenergic mechanisms.NE induces ICAN-dependent ... This complex has been proven to be essential for the generation of respiratory rhythm in mammals. The exact mechanism of the ... Gasping is characterized by a rhythm that has faster rise, shorter bursts, and lower frequency. The pre-BötC is capable of ...
ছারপোকা - উইকিপিডিয়া
Electroencephalography - Simple English Wikipedia, the free encyclopedia
Chronic obstructive pulmonary disease
"Beta-carotene: MedlinePlus Supplements". medlineplus.gov. Archived from the original on 26 December 2016. Retrieved 26 December ... and changes to the heart rhythm (long QT syndrome). Methylxanthines such as theophylline generally cause more harm than ... Wang J, Nie B, Xiong W, Xu Y (April 2012). "Effect of long-acting beta-agonists on the frequency of COPD exacerbations: a meta- ... For people with COPD, the use of cardioselective (heart-specific) beta-blocker therapy does not appear to impair respiratory ...
ICD-10 Chapter V: Mental and behavioural disorders
Amyotrophic lateral sclerosis
... beta-carotene intake, and head injury; and weak evidence for omega-three fatty acid intake, exposure to extremely low frequency ... Circadian rhythm sleep disorder *Advanced sleep phase disorder. *Delayed sleep phase disorder ... Beta-adrenergic agonist drugs have been proposed as a treatment for their effects on muscle growth and neuroprotection, but ...
Dopamine beta-hydroxylase participates in the biosynthesis of norepinephrine from dopamine. ... This process follows a diurnal rhythm, so that enzyme expression peaks in the morning to support biosynthesis later on when mid ... Kaufman S (1974). "Dopamine-beta-hydroxylase". Journal of Psychiatric Research. 11: 303-316. doi:10.1016/0022-3956(74)90112-5. ... It has been observed that while serum or blood plasma concentrations follow a circadian rhythm or reflect short-term dietary ...
Cyclin-dependent kinase 4
Jet lag was previously included as a situational circadian rhythm sleep disorder, but it doesn't appear in DSM-5 (see ... Sleep disorders are broadly classified into dyssomnias, parasomnias, circadian rhythm sleep disorders involving the timing of ... Special equipment may be required for treatment of several disorders such as obstructive apnea, the circadian rhythm disorders ... Shift work sleep disorder (SWSD), a situational circadian rhythm sleep disorder. ( ...
response to amyloid-beta. • cellular response to amyloid-beta. • regulation of calcium ion import across plasma membrane. • ... Circadian rhythm is altered in null mice. Fatal familial insomnia is thought to be the result of a point mutation in PRNP ... amyloid-beta binding. • protease binding. • glycosaminoglycan binding. • type 5 metabotropic glutamate receptor binding. • type ... Circular dichroism shows that normal PrPC has 43% alpha helical and 3% beta sheet content, whereas PrPSc is only 30% alpha ...
Blood sugar levels are regulated within fairly narrow limits. In mammals the primary sensors for this are the beta cells of ... has a circadian rhythm), with the lowest temperatures occurring at night, and the highest in the afternoons. Other normal ... Here blood sugar regulation is unable to function because the beta cells of the pancreatic islets are destroyed and cannot ... the pancreatic islets. The beta cells respond to a rise in the blood sugar level by secreting insulin into the blood, ...
Rhythm control tries to restore a normal heart rhythm in a process called cardioversion and maintains the normal rhythm with ... Beta blockers (preferably the "cardioselective" beta blockers such as metoprolol, bisoprolol, or nebivolol) ... or to convert the rhythm to normal sinus rhythm (known as rhythm control). Electrical cardioversion can convert AF to normal ... Rate versus rhythm control. There are two ways to approach atrial fibrillation using medications: rate control and rhythm ...
Alpha acid 3.5-5.5% / beta acid 3-4%). *Žatec (Saaz) - Noble hop, named after Žatec town, used extensively in Bohemia to ... on the activity/rest rhythm". Acta Physiol Hung. 99 (2): 133-9. doi:10.1556/APhysiol.99.2012.2.6. PMID 22849837.. ... Alpha acid 3-4.5% /Beta acid 3-4.5%). *Spalt - Traditional German noble hop from the Spalter region south of Nuremberg. With a ... Alpha acid 4-5% / beta acid 4-5%). *Tettnang - Comes from Tettnang, a small town in southern Baden-Württemberg in Germany. The ...
Elektroencefalografi, den frie encyklopædi
Beta er frekvensbåndet over 12-13Hz.. *Theta er frekvensbåndet fra 4Hz til 8Hz. Beta og theta signalerne er dominerende i let ... Edmond M. Dewan (1967). "Occipital alpha rhythm eye position and lens accommodation". 214. Nature. doi:10.1038/214975a0.. ... Historisk har man inddelt EEG-signalet i fire store klasser, alfa, beta, theta og delta, der alle er afgrænset af frekvenser. ... Frederick Lemere (1936). "The significance of individual differences in the Berger rhythm". Brain. 59 (3): 366-375. doi:10.1093 ...
Pfau W, Skog K (March 2004). "Exposure to beta-carbolines norharman and harman". Journal of Chromatography B. 802 (1): 115-26. ... Circadian rhythm sleep disorder *Advanced sleep phase disorder. *Delayed sleep phase disorder ... Beta blockers; propranolol, nadolol, timolol, primidone, anti-epileptics; topiramate, gabapentin, levetiracetam; ... When symptoms are sufficiently common troublesome to warrant treatment, the first medication choices are beta blockers such as ...
Frequent infusions of beta-lactam antibiotics without exceeding total daily dose would help to keep the antibiotics level above ... Although dopamine is useful to increase the stroke volume of the heart, it causes more abnormal heart rhythms than ... receptor agonists are not recommended to treat ARDS because it may reduce survival rates and precipitate abnormal heart rhythms ... minimum inhibitory concentration (MIC), thus providing better clinical response. Giving beta-lactam antibiotics continuously ...
In beta cells lacking contact, the periodicity of these oscillations is rather variable (2-10 min). However, within an islet of ... Kalsbeek A, van der Spek R, Lei J, Endert E, Buijs RM, Fliers E (February 2012). "Circadian rhythms in the hypothalamo- ... Secretion pulses emanating form free beta cells not located within an islet of Lagerhans has been observed to be highly ... Oscillations of intracellular calcium concentration in beta cells within the pancreas produces a basal pulsatile secretion of ...
Rhythms. 20 (4): 291-303. doi:10.1177/0748730405277492. PMID 16077149. There is very little evidence in the short term for ... In vertebrates, melatonin secretion is regulated by activation of the beta-1 adrenergic receptor by norepinephrine. ... Circadian rhythmEdit. In animals, melatonin plays an important role in the regulation of sleep-wake cycles. Human infants' ... Arendt J (October 2000). "Melatonin, circadian rhythms, and sleep". N. Engl. J. Med. 343 (15): 1114-16. doi:10.1056/ ...
Paul West (writer)
Biological Rhythms, Sleep and Hypnosis by Simon Green *^ Plaford, Gary R. (2009). Sleep and learning : the magic that makes us ... PET scans were used and attention was paid to the circadian rhythm of cognitive performance. ... It is known that during human adolescence, circadian rhythms and therefore sleep patterns typically undergo marked changes. ... Sleep and Circadian Rhythms".. Cite journal requires ,journal=. (help). ...
Burnout syndrome visible in brain activity - Brainclinics
weaning off beta blockers experience - Heart Rhythm - MedHelp
I know the side effects of most beta blockers are tiredness, confusion, irregular heart rhythm etc. I would contact your doctor ... Im eating again but I noticed my dizziness, fogginess, etc, gets a lot better when my beta blocker wears off. today I decided ... Im scared, I have a stress test tomorrow, is life without beta blockers even possible? how do you properly taper off 25 mg? ...
does anyone drink while taking beta blockers? - Heart Rhythm - MedHelp
does anyone drink while taking beta blockers? worried784 Lately, I have noticed that when I have a glass of wine, or two, or ... If there was an issue with alcohol and beta blockers I assume he would have told me. That said, I have cut way way back on the ... If there was an issue with alcohol and beta blockers I assume he would have told me. That said, I have cut way way back on the ... does anyone drink while taking beta blockers?. Lately, I have noticed that when I have a glass of wine, or two, or three, while ...
Parietal low beta rhythm provides a dynamical substrate for a working memory buffer | PNAS
... exhibits both beta and gamma rhythms (30, 31), with top-down information in general seen to use the alpha-beta frequency bands ... beta1 rhythms can occur as the concatenation sum of layer 5 beta2 rhythm (20 to 30 Hz) and superficial layer low-gamma rhythms ... Parietal low beta rhythm provides a dynamical substrate for a working memory buffer. Alexandros Gelastopoulos, Miles A. ... We propose that physiological properties of the parietal cortex, which can produce a unique brain rhythm at low beta (12 to 20 ...
Beta-blockers reduce mortality in HFrEF with sinus rhythm
Beta-blockers reduced mortality in individuals with HF with reduced ejection fraction in sinus rhythm regardless of ... "Beta-blockers reduce morbidity and mortality in patients with [HFrEF] in sinus rhythm," Dipak Kotecha, PhD, of the Institute of ... "Beta-blockers reduce morbidity and mortality in patients with [HFrEF] in sinus rhythm," Dipak Kotecha, PhD, of the Institute of ... Participants in sinus rhythm randomly assigned to beta-blockers had a lower risk for mortality (HR = 0.73; 95% CI, 0.67-0.79) ...
Beta rhythm legal definition of beta rhythm
What is beta rhythm? Meaning of beta rhythm as a legal term. What does beta rhythm mean in law? ... Definition of beta rhythm in the Legal Dictionary - by Free online English dictionary and encyclopedia. ... rhythm. (redirected from beta rhythm). Also found in: Dictionary, Thesaurus, Medical, Encyclopedia.. Related to beta rhythm: ... Beta rhythm legal definition of beta rhythm https://legal-dictionary.thefreedictionary.com/beta+rhythm ...
Does Disruption of Circadian Rhythms Contribute to Beta-Cell Failure in Type 2 Diabetes? | SpringerLink
The pathophysiology of beta-cell failure in T2DM involves a complex... ... is a complex metabolic disease characterized by the loss of beta-cell secretory function and mass. ... Circadian rhythms Circadian clocks Circadian disruption Hyperglycemia Type 2 diabetes Insulin secretion Beta-cell mass ... Beta-cell deficit and increased beta-cell apoptosis in humans with type 2 diabetes. Diabetes. 2003;52:102-10.PubMedCrossRef ...
Frontiers | Period concatenation underlies interactions between gamma and beta rhythms in neocortex | Frontiers in Cellular...
... with basic rhythm-generating microcircuits underlying gamma and beta2 rhythms forming the building blocks of the beta1 rhythm ... with basic rhythm-generating microcircuits underlying gamma and beta2 rhythms forming the building blocks of the beta1 rhythm ... When coexpressed rhythms have frequencies that differ by a factor of two or more interactions can be seen in terms of phase ... It is not known how coexpressed rhythms, whose frequencies differ by less than a factor of two may interact. Here we show that ...
'Bursts' of beta waves, not sustained rhythms, filter sensory processing in brain | Science...
... elevated rhythm of beta, but a look trial by trial (lower rows) shows that beta emerges in discrete... ... increases in beta activity did not manifest as a continuously elevated rhythm. Instead, when beta appeared, it quickly spiked ... Bursts of beta waves, not sustained rhythms, filter sensory processing in brain. ... A better idea of beta. While the study helps to characterize the nature of beta in the somatosensory neocortex, it doesnt ...
Motor Imagery Classification Using Mu and Beta Rhythms of EEG with Strong Uncorrelating Transform Based Complex Common Spatial...
This paper shows that the supplementary information of the power difference between mu and beta rhythms obtained using SUTCCSP ... Motor Imagery Classification Using Mu and Beta Rhythms of EEG with Strong Uncorrelating Transform Based Complex Common Spatial ... Recent studies have demonstrated the disassociation between the mu and beta rhythms of electroencephalogram (EEG) during motor ... in order to obtain the mu and beta rhythms from the nonlinear EEG signals. Then, the strong uncorrelating transform complex ...
Central Illustration | Heart Rate and Rhythm and the Benefit of Beta-Blockers in Patients With Heart Failure | JACC: Journal of...
Beta Rhythm (Music of the Mind)
As Ive learned more about bio-systems, starting from water molecules and working up to synapses and networks of neurons, Ive come to appreciate how incredibly powerful and compact the molecular computing substrate that life is built on top of is. Our most powerful supercomputers take days to calculate how one protein molecule folds, when the simplest bacteria can perform millions of these operations in parallel in seconds. What these simulations give us, however, is insight into exactly what special characteristics each of the proteins has in all of the various shapes it can assume. Building up from this low level understanding, hopefully we will be able to understand what the larger-scale purpose is for each of the various signaling chains and genetic transcriptions that are taking place, and perhaps we may one day be able to model these complex molecular interactions using state machines and logic that allows us to achieve a functionally equivalent set of operations withou ...
April 1990 - Volume 7 - Issue 2 : Journal of Clinical Neurophysiology
Audioslice: The Alloy of Law by Brandon Sanderson | Tor.com
Answers to the Beta-Readers Reactions to Sandersons Rhythm of War. * The Full Spoiler Review of Brandon Sandersons Rhythm of ... Spoiler-Free Reactions to Beta Reading Brandon Sandersons Rhythm of War. * Brandon Sandersons Rhythm of War: A Non-Spoiler ... Austin on Answers to the Beta-Readers Reactions to Brandon Sandersons Rhythm of War 32 mins ago ...
Development of infant sustained attention and its relation to EEG oscillations: an EEG and cortical source analysis study
No difference was found for the beta rhythm between different attention phases. The theta synchronization effect was localized ... Frequency analysis using simultaneously recorded EEG focused on infant theta (2-6 Hz), alpha (6-9 Hz), and beta (9-14 Hz) ... rhythms. Cortical source analysis of EEG oscillations was conducted with realistic infant MRI models. Theta synchronization was ...
Chapter 29. Simplified Model of Spiking Neurons - MATLAB for Neuroscientists, 2nd Edition [Book]
Beta Blockers - Symptoms, Treatments and Resources for Beta Blockers
Women taking beta blockers for hypertension may have higher risk of heart failure with acute coronary syndrome | Cardiac Rhythm...
Women taking beta blockers for hypertension may have higher risk of heart failure with acute coronary syndrome. 16th July 2020 ... Women taking beta blockers for hypertension with no prior history of cardiovascular disease have a nearly 5% higher risk for ... "Past research on the effects of beta blockers included a majority of participants who were men, so we sought to examine how sex ... "What we found presents a solid case for re-examination of the use of beta blocker therapy for women with hypertension. For ...
What are the characteristics of the mu rhythms on EEG?
Characteristics of the mu rhythms are as follows: Frequency of 7-11 Hz - Generally in alpha frequency band (8-12 Hz) Location ... Mu and beta rhythm topographies during motor imagery and actual movements. Brain Topogr. 2000 Spring. 12(3):177-86. [Medline]. ... Pfurtscheller G, Stancak A Jr, Edlinger G. On the existence of different types of central beta rhythms below 30 Hz. ... Mu rhythm over the left (greater than right) central region. To be absolutely certain that this is a mu rhythm, reactivity ...
Improved efficacy of temporally non-regular deep brain stimulation in Parkinson's disease
Beta Rhythm / physiology * Data Interpretation, Statistical * Deep Brain Stimulation / methods* * Electric Stimulation ... In the computational model all patterns of deep brain stimulation suppressed beta band oscillatory activity, and the degree of ... The three non-regular patterns of stimulation that improved motor performance over regular stimulation also suppressed beta ... evaluated in a biophysical model of the parkinsonian basal ganglia that exhibited prominent oscillatory activity in the beta ...
Imperceptible Somatosensory Stimulation Alters Sensorimotor Background Rhythm and Connectivity | Journal of Neuroscience
2005) On the human sensorimotor-cortex beta rhythm: sources and modeling. Neuroimage 26:347-355, doi:10.1016/j.neuroimage. ... 2009) Rolandic alpha and beta EEG rhythms strengths are inversely related to fMRI-BOLD signal in primary somatosensory and ... Rolandic rhythms.. Since Rolandic rhythms can be hidden under dominating occipital alpha activity, a preselection of "central" ... 2002) Simultaneous EEG and fMRI of the alpha rhythm. Neuroreport 13:2487-2492, doi:10.1097/00001756-200212200-00022, pmid: ...
Theta w | definition of theta w by Medical dictionary
beta wave. An electroencephalographic deflection. Its frequency is between 18 and 30 Hz. See: beta rhythm ... beta waves see under rhythm. brain waves the fluctuations of electric potential in the brain, as recorded by ... See also alpha, beta, delta, and theta waves.. C wave in intracranial pressure monitoring, a small rhythmic oscillation in ... See also: rhythm. 2. The elevation of the pulse, felt by the finger or represented in the curved line of the sphygmograph. See ...
Vasovagal Response or Heart Related? - Heart Rhythm - MedHelp
New Technology Improves Heart Rhythm Treatment - Healthcanal.com : Healthcanal.com
Beta blockers reduce stress-induced irregular heart rhythm 06/03/2019 Blood Pressure ... To track outcomes, patients received an implanted ECG monitor that very accurately assessed their heart rhythms over time. ... where brief FIRM guided ablation can shut down the arrhythmia and bring the heart back to a normal rhythm after only minutes of ... that atrial fibrillation or irregular heart rhythms is caused by small electrical sources within the heart, in the form of ...
What's the Frequency, Kenneth? As Information Flows Through Brain's Heirarchy, Higher Regions Use Higher-Frequency Waves
Neuroscientists Show Beta Rhythms Control Working Memory Science Neuroscientists Examine How Brain Waves Guide Memory Formation ... While the visual cortex beta band, for instance, peaked at 11 Hz, parietal beta peaked at 15 Hz, and prefrontal beta peaked at ... Measurements of brain wave power while animals waited to see a new image show distinct peaks in the beta frequency band in each ... But the researchers said they are consistent with a model in which alpha and beta alternately inhibit, or release, gamma to ...
Heart Rhythm Drugs
Class II - Beta-Blockers. Do beta blockers prevent heart rhythm problems?. Class II antiarrhythmics, beta blockers, are the ... Heart Rhythm Drugs. *In Treatment & Recovery. What are heart rhythm problems (arrhythmias)?. An arrhythmia, or heart rhythm ... What are the risks of heart rhythm drugs?. With the exception of beta blockers, the benefits of antiarrhythmic medications must ... It is not fully understood how beta blockers prevent heart rhythm problems: they may have a direct antiarrhythmic effect, or ...
Explore Awareness of Information Security: Insights from Cognitive Neuromechanism
From Figure 9, we can clearly see that energy ratio of beta rhythm of left hemisphere (FP1, T3, C3, O1) is higher than that of ... For example, δ, θ, α, and β rhythms can be extracted as follows:. ... rhythms will appear in a relaxed state, rhythms will appear in excited state, rhythms will appear in drowsy state, and rhythms ... From Figure 9, we also found that energy ratio of beta rhythm of test task 1 (online payment) is higher than that of test task ...
Internalized Timing of Isochronous Sounds Is Represented in Neuromagnetic Beta Oscillations | Journal of Neuroscience
2000) Gamma rhythms and beta rhythms have different synchronization properties. Proc Natl Acad Sci U S A 97:1867-1872. ... Dissociation between beta suppression and rebound. In contrast to the beta rebound, the initial beta decrease after the ... 2009) Beta and gamma rhythms in human auditory cortex during musical beat processing. Ann N Y Acad Sci 1169:89-92. ... 1981) Central beta rhythm during sensorimotor activities in man. Electroencephalogr Clin Neurophysiol 51:253-264. ...
Focal EEG Waveform Abnormalities: Overview, Alterations in Normal Rhythms, Abnormal Slow Waves
The most common cause of focal enhancement of beta activities is the breach rhythm. This occurs in the setting of a skull ... While the enhancement of beta activities is maximal near the margins of the skull defect, breach rhythms are usually widespread ... Asymmetries of the mu rhythm. Like differences the PDR, amplitude asymmetries of the mu rhythm alone are rarely associated with ... The mu rhythm is unilateral in about 30% of healthy patients, at least in the routine EEG. A change in the frequency or ...
Frontiers | Shutting Down Sensorimotor Interferences after Stroke: A Proof-of-Principle SMR Neurofeedback Study | Frontiers in...
The present study aimed at investigating behavioral and electrophysiological effects of 10 sessions of sensorimotor rhythm (SMR ... The present study aimed at investigating behavioral and electrophysiological effects of 10 sessions of sensorimotor rhythm (SMR ... Pfurtscheller, G. (1981). Central beta rhythm during sensorimotor activities in man. Electroencephalogr. Clin. Neurophysiol. 51 ... FIGURE 2. Time course of sensorimotor rhythm (SMR) power over the neurofeedback training runs, averaged over all 10 NF training ...
Yoga may aid people with irregular heart rhythm - Reuters
Reuters Health) - Regular yoga classes could help people with a common heart rhythm problem manage their symptoms while also ... People with AF are often prescribed drugs such as beta blockers to help control their heart rate and rhythm. But the medicines ... NEW YORK (Reuters Health) - Regular yoga classes could help people with a common heart rhythm problem manage their symptoms ...
FastLowerAtrialCircadian rhythmsThetaArrhythmiasArrhythmiaSinusNeuroscienceElectroencephalographyBrainIrregular heart rhythmsSensorySignalsFrequencyDesynchronizationModulateGammaFunctionallyAmyloid betaMotor imageryHumansAlpha RhythmStimulationBlockers that blockPatientsSensorimotor betaCalcium channelSerious heart rhythmTake beta-blockersNeocortexAlterationsSodium channelAbnormal heart rhythmSomatosensorySymptomsNeural mechanismsNeuronalInclude beta-blockersBurstsResearchersVentricular ratePropranololContributeOccurWavesDifferentialCardiac rhythmEffects of beta blockersBlockerHeart rhythm disordersMedicationsCharacteristics
- Hazard ratio for the effect of baseline heart rate on mortality relative to a patient with a heart rate of 80 beats/min, showing a strong positive correlation in (A) sinus rhythm but not in (B) atrial fibrillation. (onlinejacc.org)
- Atrial fibrillation is an irregular heart rhythm ( arrhythmia ) from chaotic electric signals generated in the upper chambers (atria) of the heart. (medicinenet.com)
- Atrial fibrillation medications are used to treat and manage the condition by controlling the heart rate and rhythm to prevent blood clots . (medicinenet.com)
- Atrial fibrillation also referred to as a fib, AFib , A fib, AFIB, AFib and A-fib) is a form of heart disease that causes an irregular and usually rapid heart rhythm that results from abnormal electrical impulses in the upper chambers of the heart (atria) to the AV node . (medicinenet.com)
- Atrial fibrillation (AFib) is the most common type of abnormal heart rhythm. (medicinenet.com)
- Researchers from UC San Diego, the University of California Los Angeles and Indiana University report having found, for the first time, that atrial fibrillation or irregular heart rhythms is caused by small electrical sources within the heart, in the form of electrical spinning tops ("rotors") or focal beats. (healthcanal.com)
- Once trained, DeepHeart was able to read heart rate data collected by wearables, distinguishing between normal heart rhythm and atrial fibrillation with a 97 percent accuracy rate, both when testing UCSF patients with known heart issues and Cardiogram participants. (macrumors.com)
- Atrial fibrillation, or an abnormal heart rhythm, is a condition that can be indicative of major health problems and it can lead to heart failure and stroke. (macrumors.com)
- Which beta blocker is more safe and effective for treating hypertension and(paroxysmal atrial fibrillation) carvedilol or metoprolol succinate? (healthtap.com)
- Do beta blockers such as toprol (metoprolol) help to prevent atrial and ventricular fibrillation? (healthtap.com)
- In patients with wolff-parkinson-white especially those who have a history of atrial fibrillation or flutter, beta blockers and calcium channel blockers, which are av nodal blocking agents especially Diltiazem and verapamil, should be avoided. (healthtap.com)
- Does Disruption of Circadian Rhythms Contribute to Beta-Cell Failure in Type 2 Diabetes? (springer.com)
- One environmental condition that is gaining greater appreciation as a risk factor for T2DM is the disruption of circadian rhythms (eg, shift-work and sleep loss). (springer.com)
- Arendt J. Melatonin, circadian rhythms, and sleep. (angelfire.com)
- Beta glucosidase activity is regulated via circadian rhythms. (wikipedia.org)
- Frequency analysis using simultaneously recorded EEG focused on infant theta (2-6 Hz), alpha (6-9 Hz), and beta (9-14 Hz) rhythms. (nih.gov)
- In each region, they found that when an image was either being encoded (when it was first presented) or recalled (when working memory was tested), the power of theta and gamma frequency bands of brain waves would increase in bursts and power in alpha and beta bands would decrease. (scitechdaily.com)
- When the information had to be held in mind, for instance in the period between first sight and the test, theta and gamma power went down and alpha and beta power went up in bursts. (scitechdaily.com)
- On each visit, patients received beta/sensorimotor rhythm training for 30 minutes, and then alpha/theta training for 30 minutes. (psychcentral.com)
- In children up to the age of puberty the appearance of high-amplitude theta waves, having a velocity between those of alpha and delta rhythms, usually signals the onset of emotional stimulation. (infoplease.com)
- What are heart rhythm problems (arrhythmias)? (simstat.com)
- Antiarrhythmic drugs - decrease the frequency or severity of abnormal heart rhythms, known as arrhythmias. (hrsonline.org)
- A test that records the electrical activity of the heart, shows abnormal rhythms (arrhythmias or dysrhythmias), and can sometimes detect heart muscle damage. (hopkinsmedicine.org)
- This medication is a beta-blocking agent used to treat serious heart rhythm disturbances (arrhythmias). (patientassistance.com)
- Beta-blockers reduced mortality in individuals with HF with reduced ejection fraction in sinus rhythm regardless of pretreatment heart rate, according to findings presented at Heart Failure 2017 in Paris. (healio.com)
- Beta-blockers reduce morbidity and mortality in patients with [HFrEF] in sinus rhythm," Dipak Kotecha , PhD, of the Institute of Cardiovascular Sciences at the University of Birmingham, United Kingdom, and the Centre of Cardiovascular Research and Education in Therapeutics at Monash University, Australia, and colleagues wrote in a simultaneous publication in the Journal of the American College of Cardiology . (healio.com)
- In participants randomly assigned to beta-blockers, ventricular rate was reduced by 12 beats per minute regardless of whether they were in sinus rhythm or AF. (healio.com)
- Our analysis confirms a reduction in mortality with beta-blockers for patients with HFrEF in sinus rhythm, irrespective of pretreatment heart rate within the studied range," the researchers wrote. (healio.com)
- This is the "natural pacemaker " that causes the normal range of regular heartbeats (normal rhythm or sinus rhythm) that begin with electrical-induced muscular contraction in the atrium to move oxygenated blood from the left atrium to the left ventricle (blood enters the left atrium through the pulmonary veins). (medicinenet.com)
- Are beta blockers safe to use for sinus tachycardia? (healthtap.com)
- Amidarone may be considered for patients in whom beta-blockers are contraindicated and as therapy for postoperative sinus rhythm control. (news-medical.net)
- 100 . The method according to claim 96 , wherein administering the drug comprises administering a sinus rhythm maintenance drug. (google.es)
- When people were trying to block distraction in a brain area, the probability of seeing these beta events went up," said senior author Stephanie R. Jones, an associate professor of neuroscience at Brown. (sciencecodex.com)
- The neuroscience of rhythm refers to the various forms of rhythm generated by the central nervous system (CNS). (wikipedia.org)
- Beta waves were discovered and named by the German psychiatrist Hans Berger, who invented electroencephalography (EEG) in 1924, as a method of recording electrical brain activity from the human scalp. (wikipedia.org)
- Artifacts removal and rhythms extraction from electroencephalography (EEG) signals are important for portable and wearable EEG recording devices. (peerj.com)
- We propose that physiological properties of the parietal cortex, which can produce a unique brain rhythm at low beta (12 to 20 Hz), make this cortex an excellent candidate for a substrate of such a buffer. (pnas.org)
- Beta rhythm reflects a balance between networks of nerve cells projecting from the cortex to other parts of the brain and spinal cord (i. (thefreedictionary.com)
- 6Hz, although a recent report on the health effects of mobile phones and transmitters has warned that frequency levels of 16Hz interfere with the Beta rhythm of the human brain, and are particularly damaging for children. (thefreedictionary.com)
- PROVIDENCE, R.I. [Brown University] -- To better understand the brain and to develop potential therapies, neuroscientists have been investigating how "beta" frequency brainwaves help the brain filter distractions to process sensations. (sciencecodex.com)
- The new insight, reported in the journal eLife , arose from the scientists looking beneath the covers of the typical practice of averaging beta brain wave data. (sciencecodex.com)
- The brain seemed to be flexibly modulating the expression of these beta events for optimal perception. (sciencecodex.com)
- The findings, made with consistency in humans and mice, can not only refine ongoing research into how beta waves arise and work in the brain, Jones said, but also provide guidance to clinicians as they develop therapies that seek to modulate beta waves. (sciencecodex.com)
- In the computational model all patterns of deep brain stimulation suppressed beta band oscillatory activity, and the degree of suppression was strongly correlated with the clinical efficacy across stimulation patterns. (nih.gov)
- Pineda JA, Allison BZ, Vankov A. The effects of self-movement, observation, and imagination on mu rhythms and readiness potentials (RP's): toward a brain-computer interface (BCI). (medscape.com)
- Measurements of brain wave power while animals waited to see a new image show distinct peaks in the beta frequency band in each region: About 11 Hz in visual cortex V4, 15 Hz in parietal cortex, and 19 in prefrontal cortex. (scitechdaily.com)
- Brain imaging reveals frequency-dependent lateralized rhythmic finger tapping control by the auditory cortex with left-lateralized control of relative fast and right-lateralized control of relative slow rhythms. (elifesciences.org)
- Across species, tasks and recording modalities, the rate of transient neocortical beta frequency (15-29Hz) events strongly predicts perceptual ability, providing fundamental mechanistic insight, with implications for tracking and manipulating brain dynamics. (elifesciences.org)
- Intraoperative human brain recordings during a memory task reveal that when participants inhibit memory formation, the subthalamic nucleus shows higher beta power and beta coherence with areas of the lateral cortex implicated in memory processing. (elifesciences.org)
- The historical view of electro-/magneto-encephalography (EEG/MEG) measured alpha rhythms (7-14Hz) as a 'resting' brain state is being challenged by evidence that they are actively and topographically deployed to gate information processing. (pubmedcentralcanada.ca)
- Beta wave, or beta rhythm, is a neural oscillation (brainwave) in the brain with a frequency range of between 12.5 and 30 Hz (12.5 to 30 cycles per second). (wikipedia.org)
- Rhythms of the Brain. (wikipedia.org)
- The researchers also saw a significant difference in alpha rhythm synchrony between the IFC on the left side of the brain (specifically the left inferior frontal sulcus, IFS) and the somatosensory cortex pertaining to the hand, which they speculate could be related to formulating the rules about whether suppress or attend to sensations. (brown.edu)
- Brain rhythms are the most prominent signal measured noninvasively in humans with magneto-/electro-encephalography (MEG/EEG). (springer.com)
- The scientific professions were slow in giving proper attention to Berger's discovery of the brain rhythms he named alpha waves, but since then at least three other standard brainwave patterns have been isolated and identified. (infoplease.com)
Irregular heart rhythms1
- We show that cell assemblies shaped by this rhythm have the required properties of a WM buffer, allowing for robust yet manipulable representations of sensory stimuli. (pnas.org)
- We show that the natural beta1 rhythm (12 to 20 Hz) of the PC provides a substrate for an episodic buffer that can synergistically combine executive commands (e.g., from PFC) and multimodal information into a flexible and updatable representation of recent sensory inputs. (pnas.org)
- The mu rhythm has been documented on subdural recording of both sensory and motor cortex and shows the same characteristics as that seen on surface EEG, including distribution, morphology, and reactivity. (medscape.com)
- However, allocation of these rhythms following an attentional cue, in anticipation of tactile sensory processing, has not been investigated. (pubmedcentralcanada.ca)
- A central pattern generator (CPG) is defined as a neural network that does not require sensory input to generate a rhythm. (wikipedia.org)
- Bursts of beta activity are associated with a strengthening of sensory feedback in static motor control and reduced when there is movement change. (wikipedia.org)
- The primary sensory signals of vision , audition and touch pass through thalamus en route to cortex. (scholarpedia.org)
- The proposed algorithm in this paper uses a fully data-driven multivariate empirical mode decomposition (MEMD) in order to obtain the mu and beta rhythms from the nonlinear EEG signals. (hindawi.com)
- Antiarrhythmics work by slowing down the electrical signals in the heart so the heart can resume a regular rhythm. (simstat.com)
- The grouping rule thus enables SSA to be adaptive to EEG signals containing different levels of artifacts and rhythms. (peerj.com)
- Chi & Cauwenberghs (2010) developed a system using wireless non-contact EEG electrodes to collect EEG signals for the alpha rhythm extraction. (peerj.com)
- Additionally, we examined the involvement of this beta signal relative to other neural signals such as the ERP components P2 and P3, which have been previously identified in reward processing and value computations. (bioportfolio.com)
- The decision-phase beta signal was preceded by the P2/P3b components, and all of these neural signals reliably dissociated the different reward and risk levels, suggesting the encoding of decision variables. (bioportfolio.com)
- Firstly, a single frequency of population rhythm may be amplitude modulated by a coexistent lower frequency, producing a phenomenon referred to as 'nesting' of one frequency in another. (frontiersin.org)
- The patterns of stimulation were also evaluated in a biophysical model of the parkinsonian basal ganglia that exhibited prominent oscillatory activity in the beta frequency range. (nih.gov)
- However, morphology (not absolutely typical but fairly so), frequency, and distribution strongly suggest that this is a mu rhythm. (medscape.com)
- Pfurtscheller G, Neuper C, Krausz G. Functional dissociation of lower and upper frequency mu rhythms in relation to voluntary limb movement. (medscape.com)
- The smaller amplitude, faster frequency waves that replaced alpha waves when the subject opened his or her eyes were then termed beta waves. (wikipedia.org)
- Several medications are used to treat, prevent, or lessen the frequency or severity of abnormal heart rhythms. (hrsonline.org)
- These rhythms show an event related desynchronization (ERD) with stimulation or movement, and in pre-movement periods, with a subsequent synchronization (ERS). (pubmedcentralcanada.ca)
- Performers exhibited the greatest mu rhythm desynchronization in the 8-13 Hz band, particularly in the right hemisphere compared to observers and novices. (plos.org)
- MEG results show a significant decrease in beta desynchronization and faster resynchronization in sensorimotor areas contralateral to the immobilized hand. (bournemouth.ac.uk)
- Recent studies have demonstrated the disassociation between the mu and beta rhythms of electroencephalogram (EEG) during motor imagery tasks. (hindawi.com)
- This paper shows that the supplementary information of the power difference between mu and beta rhythms obtained using SUTCCSP provides an important feature for the classification of the left- and right-hand motor imagery tasks. (hindawi.com)
- Mu and beta rhythm topographies during motor imagery and actual movements. (medscape.com)
- Figure 1A ) to assess the anatomical and functional specificity of alpha- and beta-band rhythms and their effects on the local excitability of sensorimotor neuronal ensembles during performance of a motor imagery task that offers a window into movement selection. (elifesciences.org)
- Beta-cell deficit and increased beta-cell apoptosis in humans with type 2 diabetes. (springer.com)
- The research team, led by graduate student Hyeyoung Shin, acquired the data through a series of experiments in which they measured beta waves in the somatosensory neocortex of humans and mice in the second leading up to inducing (or not inducing) varying amounts of a tactile sensation. (sciencecodex.com)
- This is just one example of how rhythm could contribute to humans unique cognitive abilities. (wikipedia.org)
- Despite the importance of understanding the underlying neural mechanisms creating these rhythms, relatively little is known about their in vivo origin in humans. (springer.com)
- A 10-second segment showing a well-formed and well-regulated alpha rhythm at 9 Hz. (medscape.com)
- The contrast between the first and second halves of the page illustrates the reactivity of a normal alpha rhythm, with attenuation upon eye opening. (medscape.com)
- At times, as shown here, the alpha rhythm can be identified only in very brief bursts and often immediately after eye closure. (medscape.com)
- This is an example of an alpha rhythm with a wider distribution than is typical. (medscape.com)
- The patient's alpha rhythm at 12 Hz is seen in the second half of the sample. (medscape.com)
- For example, the alpha rhythm reflects attention demands and the beta rhythm reflects emotional and cognitive processes ( Rowland, Meile & Nicolaidis, 1985 ). (peerj.com)
Blockers that block2
- a lower achieved heart rate is associated with lower subsequent mortality and is more likely to occur in patients initiated on a beta-blocker. (healio.com)
- In patients with concomitant AF, heart rate was not associated with mortality and beta-blockers did not reduce mortality at any observed heart rate. (healio.com)
- Reduced beta-cell mass and expression of oxidative stress-related DNA damage in the islet of Japanese Type II diabetic patients. (springer.com)
- Patients were classified by sex/gender and then separated into two groups: those taking beta blockers and those who were not. (cardiacrhythmnews.com)
- However, a randomised controlled trial of beta-blocker therapy in patients with hypertension may not be considered ethical since it would be designed to confirm risk and not benefit. (cardiacrhythmnews.com)
- The study did not include, nor have information for, the length of time patients used a previous treatment or dosing of beta blockers. (cardiacrhythmnews.com)
- Previously, antiarrhythmic medications were given to heart attack patients to help prevent heart rhythm problems from occurring in the first place. (simstat.com)
- In the past, class I antiarrhythmics were routinely given to heart attack patients to prevent heart rhythm disturbances. (simstat.com)
- To track outcomes, patients received an implanted ECG monitor that very accurately assessed their heart rhythms over time. (healthcanal.com)
- Focal abnormalities in beta activities are often most easily appreciated in patients taking benzodiazepines or other medications that increase the amount of beta in the background. (medscape.com)
- Luo S, Zhang Y, Zhang W, Zheng R, Tao J, Xiong Y. Prognostic significance of spontaneous shockable rhythm conversion in adult out-of-hospital cardiac arrest patients with initial non-shockable heart rhythms: A systematic review and meta-analysis. (medscape.com)
- The main question of this study is: 'Is selective beta-blocker treatment safe and effective in reducing sympathetic overdrive, thereby improving RV function and remodeling in patients with iPAH? (clinicaltrials.gov)
- After obtaining informed consent, 30 idiopathic PAH patients (NYHA II-III) will be randomly assigned to either the placebo group or beta-blocker therapy. (clinicaltrials.gov)
- Are beta blockers & calcium channel blockers truly contradicted in Wolff-Parkinson-White patients? (healthtap.com)
- Impact of renal impairment on beta-blocker efficacy in patients with heart failure. (uio.no)
- Experts also cast serious doubts about their effectiveness in the prevention of initial heart attacks and strokes for hypertensive patients and have concerns about the multiple side effects beta-blockers could cause (3,4). (peoplespharmacy.com)
- Some people must be very carefully monitored if they take beta-blockers such as atenolol (Tenormin): Asthmatics and patients with other respiratory problems are especially vulnerable as these drugs can make breathing worse. (peoplespharmacy.com)
- that is, patients with these conditions should not take beta blockers because these medications may be dangerous to them. (livestrong.com)
- As Dr. Norman Kaplan writes in the online medical reference UpToDate.com, patients with bradycardia should not take beta blockers. (livestrong.com)
- Patients with second or third degree heart block should not take beta blockers because there is a risk that the heart block will worsen and result in abnormal, potentially fatal heart rhythms. (livestrong.com)
- A 2007 study of over 11,000 patients, published in the journal "Pharmacotherapy," found that patients with asthma who were on beta blockers had higher rates of hospitalization and more visits to the emergency department, when compared with asthma patients not on beta blockers. (livestrong.com)
- patients with asthma already have constricted airways, so the beta blockers make the problem worse. (livestrong.com)
- According to the pharmacology database MicroMedex, patients who are prone to these episodes of low blood sugar without feeling the symptoms are advised to avoid beta blockers. (livestrong.com)
- In some cases, patients may experience palpitations without observed dysrhythmias (irregular heart rhythm). (hopkinsmedicine.org)
- The formation of beta-amyloid plaques and neurofibrillary tangles in the brains of the patients were found to be related to dementia symptoms (Wilcock & Esiri, 1982). (scholarpedia.org)
- In this study, we wish to find out if two different types of beta blocker cause different effects on the airways in COPD patients. (clinicaltrials.gov)
- Examples of such medications include beta-blockers, calcium channel blockers and heat rhythm regulators. (news-medical.net)
- How are calcium channel blockers and beta blockers different? (healthtap.com)
- Overall, guidelines recommend the use of beta-blockers over calcium channel blockers, a standard therapy for chronic AF, for general prevention of postoperative AF and control of ventricular rate. (news-medical.net)
Serious heart rhythm2
- Currently, heart rhythm medications are reserved for occasionally treating serious heart rhythm problems when they arise. (simstat.com)
- Implantable cardioverter defibrillators (ICDs) and pacemakers are safer and better than drugs for the long-term treatment of serious heart rhythm problems. (simstat.com)
- More people who must also be very carefully monitored if they take beta-blockers: Women who plan to become pregnant or breastfeed should not take this medication unless their doctors determine it is appropriate. (peoplespharmacy.com)
- Some people feel tired or feel dizzy or lightheaded when they take beta-blockers. (peacehealth.org)
- A particularly good example, Shin said, was that in experiments where people were first instructed to focus on their foot, there was more beta power in the hand region of the neocortex. (sciencecodex.com)
- While the study helps to characterize the nature of beta in the somatosensory neocortex, it doesn't explain how it affects sensations, Jones acknowledged. (sciencecodex.com)
Abnormal heart rhythm2
- While in the study, if an abnormal heart rhythm is detected, participants will be contacted by researchers and asked to wear an ePath monitor to test heart health. (macrumors.com)
- Abnormal heart rhythm is a condition in which a person has an abnormal heartbeat pattern, as detected by an EKG (electrocardiogram) of the heart. (healthtap.com)
- Shin is already doing experiments to dissect how distinct neural subpopulations contribute to beta bursts and somatosensory detection, respectively. (sciencecodex.com)
- We detail the development and application of the model to study the spontaneous somatosensory mu-rhythm, containing mu-alpha (7-14 Hz) and mu-beta (15-29 Hz) components. (springer.com)
- Heart rhythm disturbances are common early after heart attack symptoms develop. (simstat.com)
- NEW YORK (Reuters Health) - Regular yoga classes could help people with a common heart rhythm problem manage their symptoms while also improving their state of mind, a new study suggests. (reuters.com)
- Below are symptoms of a beta-blocker overdose in different parts of the body. (medlineplus.gov)
- Beta blockers may cause low or high blood glucose and mask the symptoms of low blood glucose (hypoglycemia) in people with diabetes . (medicinenet.com)
- This is because beta blockers can mask the symptoms of low blood sugar, making the problem of hypoglycemia unawareness more dangerous than it already is. (livestrong.com)
- Beta-blockers can hide your symptoms. (peacehealth.org)
- If you do have symptoms, your healthcare provider might prescribe medicine (a beta-blocker or antiarrhythmic medicine) to control your heart rhythm. (rochester.edu)
- The reason why beta blockers are not widely used in COPD at present is because of their potential to make symptoms of COPD worse by causing the airways to narrow. (clinicaltrials.gov)
- Beta blockers are the opposite type of medication to 'beta-agonists' such as salbutamol which you may be taking for symptoms of breathlessness or wheezing. (clinicaltrials.gov)
- Both rhythms displayed effector-specific modulations, tracked spectral markers of action potentials in the local neuronal population, and showed spatially systematic phase relationships (traveling waves). (elifesciences.org)
- These observations indicate the relevance of both inhibition and disinhibition mechanisms for precise spatiotemporal coordination of movement-related neuronal populations, and illustrate how those mechanisms are implemented through the substantially different neurophysiological properties of sensorimotor alpha- and beta-band rhythms. (elifesciences.org)
- A new Brown University study stands to substantially refine what they thought was going on: What really matters is not a sustained elevation in beta wave power, but instead the rate of specific bursts of beta wave activity, ideally with perfect timing. (sciencecodex.com)
- Confirming that mice model the human experience means researchers can rely on mice in experiments that delve more deeply into how beta bursts arise and what their consequence are in neurons and circuits. (sciencecodex.com)
- Alpha and beta power bursts, meanwhile, were anti-correlated with that same spiking activity. (scitechdaily.com)
- The researchers tracked the association of beta power with whether subjects accurately detected, or didn't detect, stimuli. (sciencecodex.com)
- Led by Raffaele Bugiardini, professor of cardiology at the University of Bologna (Bologna, Italy), researchers analysed the effects of beta blockers on men and women with hypertension and no history of cardiovascular disease after presenting with acute coronary syndromes. (cardiacrhythmnews.com)
- Researchers found that among the participants taking beta blockers women had a 4.6% higher rate of heart failure than men when presenting to the hospital with acute coronary syndrome. (cardiacrhythmnews.com)
- The heart rate monitors built into the Apple Watch and other wearable devices can detect abnormal heart rhythms with 97 percent accuracy, according to a new study conducted by the team behind the Cardiogram app for Apple Watch in conjunction with researchers at the University of California, San Francisco. (macrumors.com)
- Apple has been working with researchers at Stanford on its own study to determine whether the heart rate sensor in the Apple Watch can be used to detect abnormal heart rhythms and common heart conditions. (macrumors.com)
- Published in the August issue of CHEST , the peer-reviewed journal of the ACCP, the guidelines offer specific recommendations on cardiac pacing, anticoagulation therapy, pharmaceutical prophylaxis, intraoperative interventions, and pharmacologic control of ventricular rate and rhythm. (news-medical.net)
- Elucidating the role of circadian clocks in regulating beta-cell health will add to our understanding of T2DM pathophysiology and may contribute to the development of novel therapeutic and preventative approaches. (springer.com)
- Different rhythms uniquely contribute to task-related processing in the hippocampus, and changes in the rhythmic profile of the hippocampus reflect dynamic coordination of its cell activity. (elifesciences.org)
- While atenolol (Tenormin) is less likely to affect the nervous system than others in its class, beta-blockers have been known to contribute to depression. (peoplespharmacy.com)
- Spontaneous beta waves are also observed diffusely in scalp EEG recordings from children with duplication 15q11.2-q13.1 syndrome (Dup15q) who have duplications of GABAA receptor subunit genes GABRA5, GABRB3, and GABRG3. (wikipedia.org)
- For this reason, it is possible that, in certain clinical contexts, beta waves could be a general biomarker of GABAA receptor gene overexpression or otherwise aberrant GABAergic transmission. (wikipedia.org)
Effects of beta blockers3
- Past research on the effects of beta blockers included a majority of participants who were men, so we sought to examine how sex/gender plays a role in the patient outcomes," Bugiardini said "Women are historically underrepresented in most clinical studies on hypertension. (cardiacrhythmnews.com)
- What are the side effects of beta blockers? (medicinenet.com)
- This is because one of the effects of beta blockers is to decrease the heart rate. (livestrong.com)
- I'm eating again but I noticed my dizziness, fogginess, etc, gets a lot better when my beta blocker wears off. (medhelp.org)
- What we found presents a solid case for re-examination of the use of beta blocker therapy for women with hypertension. (cardiacrhythmnews.com)
- Beta-blocker therapy for long QT syndrome and catecholaminergic polymorphic ventricular tachycardia: Are all beta-blockers equivalent? (medscape.com)
- A beta-blocker used to treat high blood pressure (Check with your provider if you're nursing a preterm baby. (babycenter.com)
- Beta-blocker use and the changing epidemiology of out-of-hospital cardiac arrest rhythms. (medscape.com)
- Antihypertensive treatment with a beta-blocker (Bbl) is frequently avoided because of fear of depression of left ventricular function. (diva-portal.org)
- Beta-blocker overdose occurs when someone takes more than the normal or recommended amount of this medicine. (medlineplus.gov)
- A beta-blocker overdose can be very dangerous. (medlineplus.gov)
- In addition to the determination of RVEF, the investigators will explore how beta-blocker therapy affects sympathetic overdrive, remodeling of the RV, single beat elastance, exercise capacity and mechanical efficiency. (clinicaltrials.gov)
- This is a clinical study aimed to provide a proof of concept of the safety and efficacy of beta-blocker treatment in PAH-associated right ventricular failure. (clinicaltrials.gov)
- Benefits of the selective beta blocker toprol (metoprolol) for heart failure/ cardiomyopathy? (healthtap.com)
- Is there a beta blocker over-the-counter for arrhythmic heartbeats? (healthtap.com)
- Antidote for beta blocker overdose? (healthtap.com)
- Is coreg (carvedilol) an alpha beta blocker? (healthtap.com)
- Calcium channel blocker or beta blocker? (healthtap.com)
- The beta-blocker atenolol can be helpful for treating rapid heart rhythms. (peoplespharmacy.com)
- Atenolol ( Tenormin ) is known as a beta-blocker. (peoplespharmacy.com)
- People with a history of depression should inform their doctors to ensure both their depression and beta-blocker therapy is well managed. (peoplespharmacy.com)
- At the moment the investigators are studying to see if there is a benefit of beta-blocker use for asthma over and above asthmatics own usual doses of inhaled steroids. (clinicaltrials.gov)
- Nor did a second beta-blocker. (yahoo.com)
- One type of beta blocker is more 'selective' in acting mainly on the heart, with the other type having more general or 'non-selective' effects on both the heart and lungs. (clinicaltrials.gov)
- There are four classes of antiarrhythmic medications categorized according to how they affect heart rhythm disturbances. (simstat.com)
- However, many studies now show that these medications are not beneficial and actually increase the risk of dying because they often triggerheart rhythm disturbances. (simstat.com)
- Beta blockers are antiarrythmic medications as well as an anti-hypertensive medication. (healthtap.com)
- Beta blockers are a class of medications that work by blocking a type of cell receptor known as a beta receptor. (livestrong.com)