Brain activity photic stimulation. Medical search. Frequent questions

New neurons are born throughout life in the brains of many organisms, including humans. (wellesley.edu)

Additional maneuvers to provoke seizures are also frequently performed, like sleep deprivation, photic stimulation, hyperventilation. (wikipedia.org)
The technologist may shine flashing lights into the patients eyes (photic stimulation) or ask them to breathe deeply and rapidly (hyperventilation). (uky.edu)
If a seizure disorder is suspected and the routine EEG is normal, maneuvers that electrically activate the cortex (eg, hyperventilation, photic stimulation, sleep, sleep deprivation) can sometimes elicit evidence of a seizure disorder. (msdmanuals.com)

The vestibular nerve fibers arise from neurons of Scarpa's ganglion and project peripherally to vestibular hair cells and centrally to the VESTIBULAR NUCLEI of the BRAIN STEM. (lookformedical.com)
Our current work asks how environmental signals influence electrical and chemical signals in the brain, thereby altering the production or differentiation of new neurons. (wellesley.edu)
Suzanne Forrest ('06) is examining the influence of strobe light on the rate of neurogenesis and locations of newborn neurons in adult crayfish brain. (wellesley.edu)
In order to explore this possibility, we are testing how organophosphate pesticides influence the birth and differentiation of new neurons, and expect that the crustacean brain will provide a very sensitive assay for the effects of toxic substances in the nervous system. (wellesley.edu)
A promising candidate for such a computation is normalization, in which the responses of neurons are divided by a common factor that typically includes the summed activity of a pool of neurons. (nih.gov)
Moreover, brain energy metabolism was demonstrated to be compartmentalized in neurons and astrocytes, and astrocytic glycolysis was proposed to serve the energetic demands of glutamatergic activity. (frontiersin.org)
Namely, the rate of oxidative metabolism in astrocytes is about half of that in neurons, and it can increase as much as the rate of neuronal metabolism in response to sensory stimulation. (frontiersin.org)
Cerebral function requires the cooperative interaction between different cell types, namely neurons, astrocytes, microglia and oligodendrocytes, and depends on high metabolic activity supported by continuous supply of oxygen and glucose from the blood ( Siesjö, 1978 ). (frontiersin.org)
Laforin and malin play a critical role in the survival of nerve cells (neurons) in the brain . (medlineplus.gov)
Electrical activity recorded by electrodes placed on the scalp or surface of the brain mostly reflects summation of excitatory and inhibitory postsynaptic potentials in apical dendrites of pyramidal neurons in the more superficial layers of the cortex. (bmj.com)
We use multi-electrode arrays to record the activity of hundreds of retina neurons simultaneously in conjunction with transgenic mouse lines and chemogenetics to manipulate neural circuit function. (duke.edu)
If this hypothesis is correct, activity should be registered in neurons sooner for higher-intensity stimuli. (ox.ac.uk)

Investigative technique commonly used during ELECTROENCEPHALOGRAPHY in which a series of bright light flashes or visual patterns are used to elicit brain activity. (lookformedical.com)
For some time, electroencephalography (EEG) has been employed clinically as a measure of brain function in the hope of determining and differentiating certain functional conditions of the brain. (medscape.com)

They are often provoked by factors such as sleep deprivation or light stimulation. (medilens.co.in)

Regarding the immune system, ELF-EMF exposure contributes to a general activation of macrophages, resulting in changes of autoimmunity and several immunological reactions, such as increased reactive oxygen species-formation, enhanced phagocytic activity and increased production of chemokines. (maxwellmagneticmeds.co.za)
Cerebral function is associated with exceptionally high metabolic activity, and requires continuous supply of oxygen and nutrients from the blood stream. (frontiersin.org)
We examined how blood oxygen level-dependent activity within a priori regions of interest varied while viewing pictures of high-calorie and low-calorie foods. (ox.ac.uk)

This discovery formed the basis of a powerful technique used nowadays to study brain activity: blood oxygenation level-dependent (BOLD) functional magnetic resonance imaging (fMRI). (frontiersin.org)
To study the linearity of the CBF response to different duration stimuli, the perfusion response in primary motor and visual cortices was measured during stimulation using an arterial spin labeling technique with magnetic resonance imaging (MRI) that allows simultaneous measurement of CBF and BOLD changes. (ox.ac.uk)
Using functional magnetic resonance imaging, we have studied the interaction between nutritional state and different food stimuli on brain food reward systems. (ox.ac.uk)
The majority of network studies are conducted using functional magnetic resonance imaging (fMRI) which relies on changes in blood oxygenation induced by neural activity. (ox.ac.uk)

Since the mid-twentieth century the idea that brain energy metabolism is coupled to neuronal activity has emerged, and a number of studies supported this hypothesis. (frontiersin.org)
Although these techniques tackle the coupling between neuronal activity and metabolism, they lack chemical specificity and fail in providing information on neuronal and glial metabolic pathways underlying those processes. (frontiersin.org)
Glycogenolysis and glucose sparing dictate the energy available to support neuronal activity, thus playing a fundamental role in brain function in health and disease. (marbilab.it)
LORETA is a functional tomography that computes from EEG and/or MEG measurements, the 3D distribution of electrical neuronal activity. (icdrc.org)

FEF TMS significantly affected the neural activity evoked by visual stimuli, as well as the ongoing neural activity recorded during earlier anticipation of the visual stimuli. (ox.ac.uk)
Jane Rodgers ('06), working with Nancy Kolodny in the Chemistry Department, is using MRI techniques to test whether manganese can be utilized as a neural activity marker in the crayfish brain. (wellesley.edu)
There is increasing evidence that the brain relies on a set of canonical neural computations, repeating them across brain regions and modalities to apply similar operations to different problems. (nih.gov)
The observed nonlinearities are consistent with a model with a nonlinear step from stimulus to neural activity, a linear step from neural activity to CBF change, and a nonlinear step from CBF change to BOLD signal change. (ox.ac.uk)
Different levels in the hierarchy of visual processing, from the initial response to flashes of light, through selective responses to contour orientation and motion in primary visual cortex (V1), to global processing in extrastriate of large-scale patterns of form and motion, can each be assessed using stimuli designed to isolate specific neural activity in visual event-related potentials (VERPs). (ox.ac.uk)
We evaluated this hypothesis by measuring the onset of neural activity in the intermediate layers of the superior colliculus while monkeys generated saccades to high or low-intensity visual stimuli. (ox.ac.uk)
Our results establish a link between changes in neural activity related to stimulus intensity and changes to SRTs, which supports the hypothesis that shorter SRTs with higher-intensity stimuli are due to reduced processing time. (ox.ac.uk)
Task induced modulation of neural oscillations in electrophysiological brain networks. (ox.ac.uk)
However recently, a small number of studies have begun to elucidate the electrical origin of fMRI networks by searching for correlations between neural oscillatory signals from spatially separate brain areas in magnetoencephalography (MEG) data. (ox.ac.uk)
In combination, these findings illustrate the usefulness of systematic mental training in the study of the human mind by revealing the neural mechanisms that enable the brain to successfully represent target information. (virginia.edu)
Selective attention has previously been shown to affect neural activity in both extrastriate and striate visual cortex. (princeton.edu)
We found that attention modulated neural activity in the human lateral geniculate nucleus (LGN) in several ways: it enhanced neural responses to attended stimuli, attenuated responses to ignored stimuli and increased baseline activity in the absence of visual stimulation. (princeton.edu)

Do-Quyen Pham ('06), working with Nancy Kolodny in the Chemistry Department, is using MRI techniques to examine the response of the olfactory pathway after (1) stimulation of the olfactory sensory receptors with taurine, and (2) ablation of the antennule containing these receptors. (wellesley.edu)
Normalization was developed to explain responses in the primary visual cortex and is now thought to operate throughout the visual system, and in many other sensory modalities and brain regions. (nih.gov)
Abstract Processing of incoming sensory stimulation triggers an increase of cerebral perfusion and blood oxygenation (neurovascular response) as well as an alteration of the metabolic neurochemical profile (neurometabolic response). (marbilab.it)

Both afferent and efferent visual systems are sensitive to brain injury. (researchgate.net)

Focused use of PEMF (e.g. to a joint or body part that needs regenerative support) can also be performed separately or at the same time as the whole body mat plus brain entrainment. (nextpracticehealth.com)

To tackle Aß1-6A2V(D) in vivo effects against a neurological decline in genetically predisposed or acquired high AD risk mice, we tested its effects in triple transgenic animals harboring human PS1(M146 V), APP(SW), and MAPT(P301L) transgenes and aged wild-type mice exposed to experimental traumatic brain injury (TBI), a recognized risk factor for AD. (bvsalud.org)
We evaluated neurological histories, cerebrospinal biomarkers, brain MRI and EEG results in 126 patients. (bvsalud.org)
These networks support healthy brain function and are perturbed in a number of neurological disorders (e.g. schizophrenia). (ox.ac.uk)

electric stimulation with high intensity at 6 Hz frequency and 1-ms pulse duration served as a contrast in the other group. (maxwellmagneticmeds.co.za)
Type II fiber atrophy was retarded in denervated muscles by magnetic stimulation as well as in denervated muscles via electric stimulation. (maxwellmagneticmeds.co.za)
The selectivity of the effects in the induced responses parallels findings observed in the auditory cortex of deaf animal models following intracochlear electric stimulation. (imtlucca.it)

Although EEG is designed to record cerebral activity, it also records electrical activities arising from sites other than the brain. (medscape.com)
The recorded activity that is not of cerebral origin is termed artifact and can be divided into physiologic and extraphysiologic artifacts. (medscape.com)
Essential tremor and Parkinson disease can produce rhythmic 4- to 6-Hz sinusoidal artifacts that may mimic cerebral activity. (medscape.com)
Here, we review state-of-the-art MR methods to study brain function and metabolism in vivo , and their contribution to the current understanding of how astrocytic energy metabolism supports glutamatergic activity and cerebral function. (frontiersin.org)
Abnormalities of background cerebral rhythms, focal slow activity or regional attenuation are much less specific than epileptiform activity, although they can indicate localised structural pathology underlying the seizure disorder, or diffuse cortical dysfunction as in symptomatic generalised epilepsies. (bmj.com)
Future cerebral imaging studies will enable us to visualize the spatial localization and temporal course of reading-induced seizures and brain activity involved in reading. (ulaval.ca)
Cerebral palsy (CP) is an umbrella term for nonprogressive motor disease caused by insults to a developing brain. (annchildneurol.org)

Next to indirect consequences like injuries from falls, accidents, drowning and impairment in daily life, seizure control is critical because uncontrolled seizures -specifically generalized tonic clonic seizures- can damage the brain and increase the risk for sudden unexpected death in epilepsy called SUDEP. (wikipedia.org)
In case of focal epilepsy, this evaluation provides crucial information to determine the area of brain where seizures begin. (wikipedia.org)
The EEG can show abnormalities of these brain waves - you can sometimes see these between seizures in children with epilepsy. (kidshealth.org.nz)
Lafora progressive myoclonus epilepsy is a brain disorder characterized by recurrent seizures (epilepsy) and a decline in intellectual function. (medlineplus.gov)
The other way I describe my job is: I offer a service to physicians, helping them determine whether their patients have epilepsy, seizures, or brain injury. (aset.org)
Fried egg" cells in a patient with an oligodendroglioma, a brain tumour that frequently presents with seizures. (wanderingsolace.com)

Short trains (5 pulses at 10 Hz) of transcranial magnetic stimulation (TMS) were applied to the right FEF during the cueing period of a covert attentional task while event-related potentials (ERPs) were simultaneously recorded from lateral posterior electrodes, where visual components are prominent. (ox.ac.uk)
Transcranial electromagnetic brain stimulation is a non-invasive novel technique used recently to treat different neurodegenerative disorders, in particular Alzheimer's disease. (maxwellmagneticmeds.co.za)

FEF TMS affects visual cortical activity. (ox.ac.uk)
We tested whether the frontal eye field (FEF) is critical in controlling visual processing in posterior visual brain areas during the orienting of spatial attention. (ox.ac.uk)
The effects of FEF TMS started earlier and were greatest for brain activity recorded ipsilaterally to FEF TMS and contralaterally to the visual stimulus. (ox.ac.uk)
The results show that the human FEF has a causal influence over the modulation of visual activity in posterior areas when attention is being allocated. (ox.ac.uk)
She is doing this using photic stimulation of crayfish while in the MRI tube, to see whether the visual pathway is differentially enhanced. (wellesley.edu)
In order to examine the global architecture of stereoscopic processing in primate visual cortex, we studied fMRI activity in alert, fixating human and macaque subjects. (nih.gov)
These results demonstrate that the upregulation of energy metabolism induced by visual stimulation depends on the type of information processing taking place in V1, and that 1H-fMRS provides unique information about local input/output balance that is not measured by BOLD fMRI. (marbilab.it)
The present results support the idea that early deafness alters induced oscillatory activity and the functional tuning of basic visual processing. (imtlucca.it)
VERP and brain imaging for identifying levels of visual dorsal and ventral stream function in typical and preterm infants. (ox.ac.uk)
Visual development is a key area for understanding and assessing early brain development. (ox.ac.uk)
This approach has been used to reveal the sequence of emergence of different visual cortical functions in the first 6 months of typical human development, and to provide early indicators of anomalies in brain development. (ox.ac.uk)
My laboratory studies how the retina processes visual scenes and transmits this information to the brain. (duke.edu)
Visual contrast stimuli induced a lower increase of multi-unit activity in FHM1 mice, while the amount of information content about contrast level remained, however, similar to WT. (biomedcentral.com)
C ) Comparison between changes in absolute power (as extracted from the 2D-FFT, that is FW and BW in Figure 1 ) due to DMT, placebo and visual stimulation. (elifesciences.org)
Remarkably, true photic visual stimulation and eyes-closed DMT induce comparably large reductions in absolute power. (elifesciences.org)

Despite its proven value, the mechanisms through which EMF brain-stimulation exerts its beneficial action on neuronal function remains unclear. (maxwellmagneticmeds.co.za)
yet, the brain mechanisms underlying this are not well understood. (ox.ac.uk)

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. (lookformedical.com)
It has been understood for years that the human brain can be entrained or coerced into a brainwave phase by external stimuli such as light and sound. (nextpracticehealth.com)
The results using dim stimuli replicated the observed effects of alcohol consumption-with slowed responses accompanied by reduced error-related MFC activity. (ox.ac.uk)
Nutritional state (e.g. fasted vs. fed) and different food stimuli (e.g. high-calorie vs. low-calorie, or appetizing vs. bland foods) are both recognized to change activity in brain reward systems. (ox.ac.uk)

Human Brain Mapping. (knaw.nl)

MRI of brain is the most common neuroimaging modality to be used in evaluation of epilepsy. (wikipedia.org)
Its use in epilepsy evaluation is based on the idea that areas of brain responsible for seizure onset also have persistent metabolic dysfunction. (wikipedia.org)
An EEG can show brain wave abnormalities in children with epilepsy. (kidshealth.org.nz)
For example, the brain of a person who has epilepsy can be entrained by a strobe light. (nextpracticehealth.com)
Epileptiform activity is specific, but not sensitive, for diagnosis of epilepsy as the cause of a transient loss of consciousness or other paroxysmal event that is clinically likely to be epilepsy. (bmj.com)

Its benefits of painless stimulation as well as deeply activated muscular contraction could be expected to function as a new model for rehabilitation of paralyzed muscles. (maxwellmagneticmeds.co.za)

Therefore, we investigated whether the application of glutamate receptor agonists could reset the phase of the circadian rhythm of SCN firing activity in vitro. (eurekamag.com)

To investigate how illuminance and color temperature in illumination affect the autonomic nervous system and central nervous system in conditions tending to lower physiological activity, and with an ordinary residential setting in mind, we performed an experiment on 8 healthy male subjects. (lookformedical.com)

The results indicate that significant glutamatergic neurotransmission remains in ipRGCs of Opn4 Cre/+ ;vGlut2 loxP/loxP mice and that the ipRGC vGlut2 conditional knock-out (cKO) model resulted in only subtle changes in the rate of vesicular glutamate replenishment even at high stimulation frequencies. (eneuro.org)
What about brain frequencies? (nextpracticehealth.com)
The brain generates all its five types of waves/ frequencies at various times of the day, no one wave is better than the other as they all have roles to play. (nextpracticehealth.com)
The computational model showed how these network effects may arise from a combination of changes in thalamocortical and intra-cortical synaptic transmission, with the former inducing a lower cortical activity and the latter inducing the higher frequencies ɣ oscillations. (biomedcentral.com)

Generally, the potentials generated in the muscles are of shorter duration than those generated in the brain and are identified easily on the basis of duration, morphology, and rate of firing (ie, frequency). (medscape.com)
Repetitive stimulation with interstimulus interval of 200 ms was applied on isolated frog muscle fibre to evoke intracellular action potentials and twitch contractions. (maxwellmagneticmeds.co.za)

These involve brief, repetitive myoclonic jerks of the eyelids immediately after closing the eyes, often accompanied by a brief 3-6 Hz spike and wave activity. (medilens.co.in)

Imaging techniques used to colocalize sites of brain functions or physiological activity with brain structures. (lookformedical.com)

Differentiate also from MOTOR ACTIVITY, movement associated with behavior. (lookformedical.com)
Continuous ambulatory monitoring of the EEG (with or without video monitoring) over 24 hours or longer can often determine whether fleeting memory lapses, subjective auras, or unusual episodic motor behavior is due to seizure activity. (msdmanuals.com)

Receptors for excitatory amino acids like N-methyl-D-aspartate (NMDA) and non-NMDA receptors have both been found to play an important role in the transmission of photic information from the retina to the SCN. (eurekamag.com)

However, how these alterations reverberate on cortical activity remains unclear. (biomedcentral.com)

Although the adult human brain represents only 2% of the total body weight, it consumes up to 20% of the total glucose metabolism under normal resting physiological conditions (e.g. (frontiersin.org)
In prematurely born infants whose structural brain MRI was evaluated at birth, the onset of the response is absent or delayed in those with severe brain injury, while in those with mild/moderate brain injury the response is present but its spatial organization is further from the adult pattern than those in controls. (ox.ac.uk)

An EEG is a recording of their brain's electrical activity. (kidshealth.org.nz)

In this context, 1 H MRS has allowed the measurements of energy metabolism-related compounds, whose concentrations can vary under different brain activation states. (frontiersin.org)

Here, we aimed to investigate the impact of early deafness on the oscillatory signatures of RS and ND brain responses. (imtlucca.it)
By studying evoked and induced oscillatory brain activities, as well as inter-trial phase coherence, we linked response modulations to feedback and/or feedforward processes. (imtlucca.it)
Intensive mental training was associated with decreased cross-trial variability in the phase of oscillatory theta activity after successfully detected T2s, in particular, for those individuals who showed the greatest reduction in brain resource allocation to T1. (virginia.edu)
Mental training was not associated with changes in the amplitude of T2-induced responses or oscillatory activity before task onset. (virginia.edu)

Constant exposure to technology trains our brains to be reactive, not creative. (nextpracticehealth.com)

Here, evidence from functional brain imaging shows that attentional response modulation is not confined to cortical processing, but can occur as early as the thalamic level. (princeton.edu)

The influence of pulsed magnetic stimulation on denervated muscles was investigated in this study. (maxwellmagneticmeds.co.za)
For this section, I've prepared an "All Things EEG, 2nd Edition" crossword puzzle for you to exercise your brain muscles. (aset.org)

electrical activity in the brain) signals result in the selective activation of neuronal and molecular pathways controlling neurogenesis. (wellesley.edu)
Propagation of electrical activity along physiological pathways or through volume conduction in extracellular spaces may give a misleading impression as to location of the source of the electrical activity. (bmj.com)

High-density recordings of responses to global motion and global form patterns show that these extrastriate systems are typically functional by 5 months of age, but the topography of the activity distributions shows that the brain systems underlying these responses are radically reorganized between infancy and adulthood. (ox.ac.uk)
Primary headaches have long been associated with significant functional impairment of social and work activities [ 1 ]. (springeropen.com)

2. MRI scan is often performed to exclude brain abnormalities, although results are typically normal. (medilens.co.in)
If I am talking to another healthcare professional, I will tell them that I monitor brainwaves of patients and look for any seizure-like activity or any abnormalities. (aset.org)

Repeatedly closing and opening the eyelids triggers transient bursts of high-amplitude activity, characterized by fast generalized 3-6 Hz polyspike and wave patterns lasting 1-6 seconds. (medilens.co.in)

We then review recent experimental findings that advance the possibility of inducing sleep-like slow-wave activity (SWA) during wakefulness or enhance SWA during sleep in a top-down manner using noninvasive brain stimulation. (marbilab.it)
These findings are related to the development of distinct networks of brain areas in the dorsal and ventral cortical streams, and the apparent vulnerability of the dorsal-stream network in a wide range of both genetic and acquired developmental disorders. (ox.ac.uk)
In recent years, one of the most important findings in systems neuroscience has been the identification of large scale distributed brain networks. (ox.ac.uk)
This study furthers recent findings on electrodynamic brain networks and paves the way for future clinical studies in patients in which abnormal connectivity is thought to underlie core symptoms. (ox.ac.uk)

The photomyoclonic response is a special type of EMG artifact that occurs during intermittent photic stimulation. (medscape.com)
Contrast-driven ɣ modulation in V1 activity occurs at a much higher frequency in FHM1. (biomedcentral.com)

Status epilepticus is a continuous state of seizure activity lasting longer than several minutes. (medlineplus.gov)

In the presence of normal neurologic and ophthalmologic examinations, the most common conditions associated with photophobia are migraine, blepharospasm, and traumatic brain injury. (researchgate.net)

Sympathetic innervation of the spleenappears to play an important role in the modulation of immune function, since changes in splenic nerve activity altera variety of cellular and humoral immune responses in this organ (Wan et al 1994). (fliphtml5.com)

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. (lookformedical.com)
LORETA developed by Roberto Marquis Pascal in the mid 1990's is a technique based on the best of the inverse solutions which allows quantification and visualization of intracortical activity including paleocortical activity derived from scalp electrodes. (icdrc.org)

An EEG shows the electrical activity (brain waves) in your child's brain. (kidshealth.org.nz)
It records the electrical activity of the brain. (uky.edu)

What we do know, however, is that sleep is critical for behavioral performance during the waking period and for long-term brain health. (marbilab.it)

Information from seizure symptoms and their evolution over the course of the seizure as well changes on EEG in relation to the symptoms is used to hypothesize the likely area of the brain responsible for seizure symptoms (symptomatic zone) and by extrapolation the area where seizure likely starts (seizure onset zone). (wikipedia.org)
Delayed or absent onset of orientation-reversal (OR-)VERPs, as a measure of cortical development, has been shown to be a sensitive indicator of perinatal brain damage in both term-born and prematurely born infants. (ox.ac.uk)

Magnetic stimulation, used as a method that induces muscular activity, was verified in this study as being capable of retarding denervated muscular atrophy. (maxwellmagneticmeds.co.za)

This interpretation leads to the prediction that stimulus degradation should likewise reduce error-related activity in the MFC. (ox.ac.uk)

In response to head movement , the otoliths shift causing distortion of the vestibular hair cells which transduce nerve signals to the BRAIN for interpretation of equilibrium. (lookformedical.com)

METHODS: In the current study, PET-derived measures of regional glucose metabolism, EEG, and structural MRI were obtained from each participant to assess the relation between thalamic metabolic activity and alpha power in depressed patients and healthy controls. (virginia.edu)
The MRI was then co-registered to the corresponding PET scan and metabolic activity from the thalamus extracted. (virginia.edu)

Brain waves characterized by a relatively high voltage or amplitude and a frequency of 8-13 Hz. (lookformedical.com)
Increasing evidence shows that extremely low frequency electromagnetic fields (ELF-EMFs) stimulation is able to exert a certain action on autoimmunity and immune cells. (maxwellmagneticmeds.co.za)
Prolonged eye closure results in increased alpha frequency activity that extends to frontal areas. (medilens.co.in)
A strobe light that resonates at the frequency of a seizure can entrain the brain and trigger a seizure. (nextpracticehealth.com)
The frequency of brain wave activity is altered according to the state of consciousness and state of mind during meditation. (nextpracticehealth.com)

Specifically, activity in brain areas during Task 1 associated with (i) executive control and response suppression (i.e. lateral prefrontal cortex) and (ii) affective responses and value representation (i.e. orbitofrontal cortex), systematically covaried with behavioral ratings and amygdala activity obtained during Task 2. (ox.ac.uk)

It is used in patients with cognitive dysfunction involving either a general decline of overall brain function or a localized or lateralized deficit. (medscape.com)
Photoparoxysmal discharges induced by photic stimulation are common in untreated young patients. (medilens.co.in)
In the beginning of my career journey, I started working in a major hospital system that saw the worst-case scenarios of brain-related issues, followed by selling equipment that helps detect brain-related issues, and now, full circle, I have the best of both worlds, offering an amazing service to these physicians and taking care of their patients. (aset.org)

Brain Topography. (knaw.nl)

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. (lookformedical.com)
The EEG records brain waves for 20 to 45 minutes, which is only a small amount of time. (kidshealth.org.nz)
They help record brain waves. (uky.edu)
Just as our cells can be signalled to perform new and different functions by stimulation with chemicals (e.g., nutrients or drugs), they can also be signalled energetically with electromagnetic waves. (nextpracticehealth.com)
Then when we put the book down, turn off the lights and close our eyes, our brain waves should descend from beta, to alpha, the theta and finally delta when we fall asleep. (nextpracticehealth.com)

CP is a group of heterogeneous disorders resulting from various types of brain injuries during prenatal, perinatal, and postnatal periods [ 1 ]. (annchildneurol.org)

The sensitivity of the MFC to disrupted processing elsewhere in the brain suggests complications in interpreting evidence of disturbed MFC function. (ox.ac.uk)
We conducted two fMRI studies to investigate the sensitivity of delay-period activity to changes in memory load during a delayed-recognition task for faces. (virginia.edu)

Anatomy40

Organisms12

Diseases24

Chemicals and Drugs11

Analytical, Diagnostic and Therapeutic Techniques and Equipment53

Psychiatry and Psychology74

Phenomena and Processes59

Disciplines and Occupations6

Anthropology, Education, Sociology and Social Phenomena1

Humanities1

Information Science17

Health Care6

Humans1

Hyperventilation3

Neurons12

ELECTROENCEPHALOGRAPHY2

Deprivation1

Oxygen3

Magnetic Resonan4

Neuronal activity4

Neural12

Sensory3

Afferent1

Entrainment1

Neurological3

Electric stimulation3

Cerebral7

Seizures6

Transcranial2

Visual15

Mechanisms2

Stimuli4

Mapping1

Epilepsy5

Painless1

Circadian1

Male1

Frequencies4

Potentials2

Repetitive1

Structures1

Behavior2

Retina1

Cortical activity1

Adult2

Brain's1

Energy metabolism1

Oscillatory4

Reactive1

Imaging1

Muscles2

Pathways2

Functional2

Abnormalities2

Triggers1

Findings4

Occurs2

Seizure activity1

Traumatic brain1

Modulation1

Scalp2

Electrical2

Performance1

Onset2

Induces1

Stimulus1

Movement1

Metabolic activity2

Frequency5

Responses1

Patients3

Topography1

Waves5

Disorders1

Sensitivity2