• There is no end to the list of physiological phenomena which have implications for medicine and health. (bio.net)
  • Landolt concluded that forced normalization is "the phenomenon characterized by the fact that, with the occurrence of psychotic states, the electroencephalography becomes more normal or entirely normal, as compared with previous and subsequent EEG findings. (wikipedia.org)
  • The subject of this breakout session will be experimentation with electrophysiological methods, such as electroencephalography (EEG). (quantifiedself.com)
  • We also do not cover electrophysiological imaging approaches, including electroencephalography (EEG), event-related potentials (ERP) and magnetoencephalography (MEG). (psychiatrictimes.com)
  • Electrophysiologically active PG neurons.Representative electrophysiological analysis of hpESC-derived neurons (LLC9P) after in vitro differentiation for 28 days. (nih.gov)
  • As shown in Table S1, electrophysiological properties of PG neurons at 28 days of differentiation were comparable to those reported in literature for human in vitro induced neuronal cells [32]. (nih.gov)
  • Successful reprogramming was determined by performing histology and electrophysiological tests to confirm the tissue behaved as functional neurons. (wikipedia.org)
  • David Hubel and Torsten Wiesel's (1962) electrophysiological demonstrations of the receptive field properties of visual neurons had been reported with great fanfare. (stanford.edu)
  • We find that models are becoming increasingly sophisticated, by including stochastic properties, integrating with electrophysiological properties of entire neurons, or incorporating diffusion of signaling molecules. (biomedsearch.com)
  • Utilizing electrophysiological techniques, the team found that microglia caused neurons to fire at an increased rate, a phenomenon known as intrinsic plasticity. (medicalxpress.com)
  • Specifically, mutant mice have more immature neurons (expressing protein marker Calretinin) and less mature neurons (expressing protein marker Calbindin) in their hippocampal dentate gyrus, resulting in alternations of neuronal electrophysiological properties and malfunction of hippocampal neural circuit. (bio-medicine.org)
  • However, more recent studies focusing on higher level cognitive factors such as attention and visual awareness report striking discrepancies between the fMRI response in humans and electrophysiological signals in macaque early visual areas. (arvojournals.org)
  • In vivo electrophysiological recordings of neuronal circuits are necessary for diagnostic purposes and for brain-machine interfaces. (nih.gov)
  • 4 5 7 11 12 However, regional differences in the electrophysiological properties of myocardial layers have not been clearly demonstrated in vivo. (ahajournals.org)
  • In vivo electrophysiological recordings were carried out in rats after 2 and 14 days administration of vehicle, carisbamate (60 mg/kg daily), or lamotrigine (25 mg/kg daily). (aspetjournals.org)
  • By introducing the optogenetic sensors chimeric VSFP-butterfly CY and GCaMP6f into the zebrafish we successfully generated an in vivo cellular electrophysiological readout tool for the zebrafish heart. (zfin.org)
  • She continues to explore the mechanisms that underlie such scaling phenomena and their function in vivo using a variety of molecular, electrophysiological, imaging and computational approaches. (hfsp.org)
  • METHODS 10 patients with lone paroxysmal atrial fibrillation underwent an electrophysiological study. (bmj.com)
  • The systems and methods sense an electrophysiological effect due to the transmitted pulse. (google.es)
  • The systems and methods alter an electrophysiological property of myocardial tissue in or near the zone based, at least in part, upon the sensed electrophysiological effect. (google.es)
  • We classified pictographic characters into High-Meaningfulness (High-M) and Low-Meaningfulness (Low-M) categories on the basis of subjective meaningfulness ratings and identified the distinct electrophysiological correlates of perceptual and conceptual fluency. (frontiersin.org)
  • His 12-lead ECG showed atrial fibrillation with Ashman phenomenon is an aberrant ventricular an aberrant conduction (Ashman phenomenon, figure conduction during a trial fibrillation. (who.int)
  • Ashman phenomenon is an aberrant conduction of electrophysiological property of the heart is strongly the ventricle as a result of a change in the QRS cycle affected by the heart rate, which on the other hand length. (who.int)
  • We also examined the electrophysiological effect of adrenergic stimulation by isoprenaline during atrial fibrillation in patients given class 1C drugs, as the most important untoward effects (namely synchronisation with 1:1 atrioventricular conduction) have been described in patients experiencing some degree of adrenergic activation. (bmj.com)
  • Ashman phenomenon is an aberrant ventricular conduction due to a change in QRS cycle length. (medscape.com)
  • Ashman phenomenon is an intraventricular conduction abnormality caused by a change in the heart rate. (medscape.com)
  • This will enable us to decipher pathophysiological mechanisms of freezing phenomena further. (uni-tuebingen.de)
  • Therein he offered detailed explanations of psychological phenomena in terms of known neural mechanisms and anatomical circuits. (stanford.edu)
  • There are probably several mechanisms for Tullio's phenomenon as several types of disease processes have been associated with Tullio's. (dizziness-and-balance.com)
  • Freezing phenomena including freezing of gait (FOG) highly disturb the quality of life in patients with Parkinson's disease (PD). (uni-tuebingen.de)
  • Electrophysiological dfierences between demented and nondemented patients with Parkinson's disease. (docme.ru)
  • Electrophysiological Dfierences Between Demented and Nondemented Patients with Parhnson's Disease Douglas S. Goodin, MD, and Michael J. Aminoff, MD ~ Long-latency auditory evoked potentials were studied in demented and nondemented patients with Parkinson's disease who were matched for age, stage of disease, duration of illness, and amount and nature of antiparkinsonian medication. (docme.ru)
  • Goodin DS, Aminoff MJ: Electrophysiological differences between demented and nondemented patients with Parkinson's disease. (docme.ru)
  • Solberg et al 1 described different electrophysiological characteristics of ventricular surface cells and cells in deep myocardial layers. (ahajournals.org)
  • A recent detailed analysis of the unique population of M cells in the ventricular midmyocardium 2 3 4 5 6 revealed electrophysiological features intermediate between those of myocardial and specialized conducting (Purkinje) fibers. (ahajournals.org)
  • Ashman phenomenon illustrated by 12th and 15th beats, which follow a premature ventricular complex and long R-R cycle respectively. (medscape.com)
  • 1 2 Interest in repolarization alternans is attributed to the hypothesis that it may reflect an underlying dispersion of repolarization in the heart, a well-recognized electrophysiological substrate for reentrant ventricular tachyarrhythmias (VTs). (ahajournals.org)
  • This suggests that the phenomenon may be more prevalent than previously recognized and may represent an important marker of vulnerability to ventricular tachyarrhythmias. (ahajournals.org)
  • Intracellular electrophysiological recordings from muscle cells within intact arterial segments are done utilizing standard glass microelectrodes to study these phenomena. (mcw.edu)
  • These results provide strong evidence for the existence of different subtypes of dementia and suggest that electrophysiological recordings may be helpful in establishing the underlying pathogenesis of a dementia syndrome when there is clinical uncertainty. (docme.ru)
  • We study how neuronal circuits in the hippocampus mediate these functions with focuses on two distinct phenomena in the adult hippocampus: place cell activity and neurogenesis. (ntu.edu.sg)
  • Early fMRI studies comparing results from fMRI and electrophysiological experiments support the notion that the blood oxygen level-dependent (BOLD) signal reliably follows the spiking activity of an underlying neuronal population averaged across a small region in space and a brief period in time. (arvojournals.org)
  • 2 In light of the above, the present study was designed to compare the electrophysiological characteristics of different myocardial layers in tissues in vitro and in hearts in situ over a wide range of CLs. (ahajournals.org)
  • We hypothesize that, compared to same age peers, autistics will show abnormalities in their electrophysiologic processing of sounds (tones and phonemes)and visual stimuli (flashes of light)and that these abnormalities will be able to separate autistics not only from typical children but also into clinical subgroups with specific biological/electrophysiological characteristics. (clinicaltrials.gov)
  • Advances in imaging studies and electrophysiological studies allow us to gain a deeper insight into the characteristics and properties associated with the phenomenon of chronic pain. (bionity.com)
  • Where possible, they are compared with each other and with relevant behavioral phenomena. (springer.com)
  • Electrophysiological and behavioral activity of secondary metabolites in the confused flour beetle, Tribolium confusum . (springer.com)
  • Electrophysiological and behavioral responses of the multicolored asian Lady Beetle, Harmonia axyridis Pallas, to sesquiterpene semiochemicals. (springer.com)
  • This phenomena, referred to as an "immature dentate gyrus" (iDG), may underlie behavioral deficits observed in these mutants. (bio-medicine.org)
  • Ashman phenomenon was first reported in 1947 A. J .A. is an 81 year old Nigerian man. (who.int)
  • Ashman phenomenon, arrhythmia, and second heart sounds were heard and irregular. (who.int)
  • 12 lead ECG showing Ashman phenomenon (Has a RBBB morphology and occurring when a short R-R interval follows a long R-R interval. (who.int)
  • Ashman Phenomenon beat terminating the cycle is likely to be conducted with aberrancy. (who.int)
  • Ashman phenomenon is related to the underlying pathology and is a common ECG finding in clinical practice. (medscape.com)
  • Abstract 10380: The Ashman Phenomenon in Patients With Atrial fibrillation Treated With an IKr Blocker, Dofetilide. (medscape.com)
  • Dyer, R. G., 1973, An electrophysiological dissection of the hypothalamic regions which regulate the pre-ovulatory secretion of luteinizing hormone in the rat, J. (springer.com)
  • Electrophysiological measures of brain function are effective tools to understand neurocognitive phenomena and sensitive indicators of pathophysiological processes associated with various clinical conditions, including alcoholism. (ebscohost.com)
  • LTP is an electrophysiological phenomenon which is explored intensively at molecular levels because some think it is a model for very basic processes underlying memory formation. (bio.net)
  • Binaural Beats and Pain Endurance: A double blind, randomised study into the effectiveness of an auditory phenomenon on cold pain endurance. (scribd.com)
  • When making electrophysiological observations of an auditory mechanism, an electrode (one terminal, generally a fine wire, in an electric circuit) is placed on a nerve or some other sensory structure in the mechanism. (britannica.com)
  • Aim 1: To recruit 75 children with autism and 75 age- and sex-matched controls ages 6 to 8 years old for an electrophysiological study and to characterize the subjects using appropriate instruments for autism diagnosis, language functioning and behavior/sensory profile, and to measure head circumferences Aim 2: To acquire and analyze event-related potential (ERP) data in the auditory and visual modality. (clinicaltrials.gov)
  • To test the hypothesis that Nrl − / − photoreceptors are cones, by comparing them with WT rods and cones using morphological, molecular, histochemical, and electrophysiological criteria. (arvojournals.org)
  • Many morphological, molecular, and electrophysiological features of the Nrl −/− photoreceptors are cone-like, and strongly distinguish these cells from rods. (arvojournals.org)
  • 1973. Paracellular pathway in kidney tubules: Electrophysiological and morphological evidence. (springer.com)
  • With respect to freezing phenomena, it is necessary to further elucidate the pathophysiological mechanism. (uni-tuebingen.de)
  • Mammalian electrophysiological studies have been central to delineating physiological and pathophysiological functions of the mesodopamine system. (nc3rs.org.uk)
  • The second section explores the electrophysiological phenomena observed during pharmacological conditioning, with emphasis on the modifications of electrical activity during the establishment and the performance of the conditioned responses. (elsevier.com)
  • Here we demonstrate the engineering of an organic electrochemical transistor embedded in an ultrathin organic film designed to record electrophysiological signals on the surface of the brain. (nih.gov)
  • However, in the BD group, no significant differences were observed in the electrophysiological brain activity between remembered and forgotten items during the encoding process. (frontiersin.org)
  • The goal of this grant is to use electrophysiological measures to characterize abnormalities in gating and timing in the autistic brain. (clinicaltrials.gov)
  • Here, we propose a generalized connectionist framework in which the emergence of "conscious networks" is not exclusive of large brain areas, but can be identified in subcellular networks exhibiting nontrivial quantum phenomena. (mdpi.com)
  • A new article by Maertens and Pollmann investigates how these two phenomena might interact - finding interesting evidence that the brain might fabricate reality just one step at a time. (scienceblogs.com)
  • Even proton imaging has generally focused on a subset of possible contrast phenomena, leaving unexamined other biophysical properties of brain. (psychiatrictimes.com)
  • We show that typical real-world electrophysiological signals, with smooth deviations from harmonicity, are typically well described with just the first few terms and result in a rather compact, sparse representation. (inria.fr)
  • Atrial dissociation with segmental atrial arrhythmia is an interesting electrophysiological phenomenon. (biomedsearch.com)
  • We found clear electrophysiological differences between the two groups of patients in that the N1, N2, and P3 peak latencies were prolonged in the demented group compared both to the nondemented group and to normal controls. (docme.ru)
  • However, we could not completely exclude the possibility that these electrophysiological differences were related to the underlying disease rather than to the dementia itself. (docme.ru)
  • OBJECTIVES The frequency of pathologically reduced click thresholds for vestibular activation was explored in patients with the Tullio phenomenon (sound induced vestibular activation). (bmj.com)
  • CONCLUSIONS A pathologically reduced threshold to click activation (⩽70 dB NHL (average normal hearing level)) seems to be a consistent feature of the Tullio phenomenon and a useful diagnostic criterion. (bmj.com)
  • The Tullio phenomenon is a rare but remarkable clinical entity in which everyday loud sounds will activate the vestibular apparatus. (bmj.com)
  • 1-3 Various disease states have been reported to underlie the pathological sound sensitivity that occurs in the Tullio phenomenon, including dislocation of the stapes footplate, labyrinthine fistulas, endolymphatic hydrops, and dehiscence of the superior semicircular canal. (bmj.com)
  • We have recently reported a patient with the Tullio phenomenon in whom there was a pathological increase in her sensitivity to a new test of vestibular function using clicks. (bmj.com)
  • In view of the potential importance of our initial finding we have investigated a series of patients with Tullio phenomenon using clicks as well as galvanic vestibular stimulation, the second to assess the excitability of vestibular pathways proximal to the receptors. (bmj.com)
  • Manipulations of stimulus location, contrast, adaptation, orientation, motion, and color all produce fMRI responses that are consistent with what is expected from electrophysiological responses in the macaque visual cortex. (arvojournals.org)
  • These findings ‒ increased alpha activity and increased beta synchronization ‒ could probably function as biomarker to predict freezing phenomena. (uni-tuebingen.de)
  • The objective of our study was to determine whether brainstem and spinal cord in rabies patients are lacking of either apoptosis or mitochondrial outer membrane permeabilization (MOMP) or both which, in turn, may explain this escape phenomenon. (biomedcentral.com)
  • This phenomenon was similar to the pervasive negative blood oxygenation level-dependent (BOLD) response reported in functional magnetic resonance imaging (fMRI) study. (arvojournals.org)
  • Ideally, a single experimental procedure could be used to study both phenomena. (nc3rs.org.uk)
  • In the present report, a systematic study was performed to investigate tridimensional dispersion of repolarization associated with tachycardia-dependent QT/T alternans in this model and the electrophysiological basis for the arrhythmogenicity during QT/T alternans in general. (ahajournals.org)
  • In the present study, we investigated the electrophysiological properties as well as solute and antibiotic permeation rates of recombinant PIB proteins containing penB mutations (G120K, G120D/A121D, G120P/A121P, and G120R/A121H). (asm.org)
  • Using electrophysiological criteria alone, we were able to classify correctly most of ouf patients into one of these three diagnostic groups, thereby lending support to the notion of different subtypes of dementia. (docme.ru)
  • Along with this "escape phenomenon" of rabies virus infected spinal cord, it is also intrigued that rabies patients do not have depressed consciousness during the most entire clinical course despite an enormous amount of rabies virus since the early stage in the brainstem and thalamus, structures which are crucial in maintaining alertness and form an integral part of reticular activating system. (biomedcentral.com)
  • Our analysis suggests a principled scheme of how complex M/EEG phenomena can be modeled parsimoniously on two time-scales: While the system displays fast oscillations, it slowly traverses phase space to another qualitatively different oscillatory regime, depending on the input dynamics. (mpg.de)
  • This illusory contour effect has been surprisingly difficult to localize: electrophysiological work suggests it may originate from primary or secondary visual cortex while neuroimaging indicates a higher-level origin (such as in the lateral occipital cortex). (scienceblogs.com)
  • The alteration of the electrophysiological property can be accomplished, for example, by tissue ablation or by the administration of medication. (google.es)
  • Here we use the retinal CNG channel (CNGA1) as a model to illustrate the analytical solutions and electrophysiological hallmarks of these two models. (upenn.edu)
  • The objective of this work is the development of an advanced embedded wireless sensor to detect electrophysiological phenomena in order to investigate the correlation of biosignal patterns to salinity stress in ornamental plants. (staffs.ac.uk)
  • Electrophysiological changes delineated children who were functionally stable from those who attained clinically significant gains in motor function. (bmj.com)
  • For this purpose, we take an interdisciplinary approach combining virus-mediated genetic manipulation, optogenetics and optical and electrophysiological recording techniques in behaving rodents. (ntu.edu.sg)
  • We accomplish these aims using state-of-the-art optogenetic, electrophysiological and imaging techniques (including 9.4T small-animal functional magnetic resonance imaging) as well as psychophysical tasks amenable to quantitative analysis and computational theory. (europa.eu)
  • This is dependent on the effects of rate on the electrophysiological properties of the heart and can be modulated by metabolic and electrolyte abnormalities and the effects of drugs. (medscape.com)
  • Indicators are mainly designed for Ca 2+ , although K + is also an important target for its role in maintaining cellular membrane potential and regulating many other electrophysiological phenomena. (spiedigitallibrary.org)
  • Bioelectrical Phenomena Evoked by Rhythmical Stimuli During Conditioning and Differentiation. (elsevier.com)
  • Despite the lack of information of a detailed mechanism, the crossed-withdrawal reflex is a very interesting phenomenon. (hindawi.com)
  • Electrophysiological Studies Each patient was presented binaurally with a predetermined sequence of 420 tones (65 dBHL, 50-msec duration, 5-msec rise and fall times) at a rate of one tone every 1.5 seconds. (docme.ru)
  • Electrophysiological measures included compound muscle action potential (CMAP), motor unit number estimation (MUNE), motor unit number contributing to 50%-100% of CMAP (N50) and measures of collateral reinnervation including largest single motor unit potential (LSMUP) and amplitude of the smallest unit contributing to N50 (A50). (bmj.com)
  • This is not due to dilation of the pupil , because the same phenomenon occurs if the subject is made to look through an artificial pupil of fixed diameter. (britannica.com)
  • Dielectrophoresis (DEP) has been used for many years for the analysis of the electrophysiological properties of cells. (surrey.ac.uk)
  • The models are classified according to the type of synaptic plasticity that is modeled (LTP or LTD) and whether they include diffusion or electrophysiological phenomena. (biomedsearch.com)
  • Mathematical modeling is vital for the understanding of complex phenomena, but the use of mathematical models requires careful specification of their parameter values against available data. (sciencemag.org)
  • Two models have been postulated to explain this phenomenon. (upenn.edu)
  • For fMRI, a standard calibration set comes from electrophysiological recording experiments in the macaque visual cortex. (arvojournals.org)