نتایج جستجو برای: electrophysiological techniques

تعداد نتایج: 653044  

Journal: :Current opinion in neurobiology 2009
Edith Chorev Jérôme Epsztein Arthur R Houweling Albert K Lee Michael Brecht

Most of our current knowledge about the neural control of behavior is based on electrophysiology. Here we review advances and limitations of current electrophysiological recording techniques applied in behaving animals. Extracellular recording methods have improved with respect to sampling density and miniaturization, and our understanding of the nature of the recorded signals has advanced. Jux...

Journal: :Journal of neurology, neurosurgery, and psychiatry 1979
R S Donoso J P Ballantyne S Hansen

Electrophysiological and clinical assessment of recovery of function was undertaken on 34 median and 33 ulnar nerve which had been resutured after complete section three and a half months to 24 years previously. An evaluation of different methods of repair was attempted. Our results suggested that re-exploration of the site of suture is indicated in the absence of voluntary activity on needle E...

Journal: :PLoS ONE 2008
Courtney B. Field Kevin Johnston Joseph S. Gati Ravi S. Menon Stefan Everling

BACKGROUND Neuroanatomical studies investigating the connectivity of brain areas have heretofore employed procedures in which chemical or viral tracers are injected into an area of interest, and connected areas are subsequently identified using histological techniques. Such experiments require the sacrifice of the animals and do not allow for subsequent electrophysiological studies in the same ...

Introduction: Memantine as N-Methyl-D-aspartic acid (NMDA) receptor antagonist is used in some neurological disorders. It has been reported that memantine has modulatory effects on the somatosensory information processing in healthy subjects. This study investigated the effect of memantine on electrophysiological properties of barrel cortex neurons in male rats. Methods: Single unit recording ...

Journal: :iranian journal of basic medical sciences 0
guan zeng li department of neurology, liaocheng people’s hospital, 67 dongchang xi road, liaocheng 252000, china zhe hui liu department of cadre health protection, liaocheng people’s hospital, 67 dongchang xi road, liaocheng 252000, china xinya wei department of neurology, second affiliated hospital, harbin medical university, 194 xuefu road, nangang district, harbin 150081, heilongjiang, china pan zhao department of neurology, second affiliated hospital, harbin medical university, 194 xuefu road, nangang district, harbin 150081, heilongjiang, china chun xiao yang department of neurology, second affiliated hospital, harbin medical university, 194 xuefu road, nangang district, harbin 150081, heilongjiang, china man ying xu laboratory of neural algesia electrophysiology, department of physiology, harbin medical university, 194 xuefu road, nangang district, harbin 150081, heilongjiang, china

objective(s):to determine the effect of acetylcholine (ach), pilocarpine, and atropine on pain evoked responses of pain excited neurons (pen) and pain inhibited neurons (pin) in hippocampal ca3 region of morphine addicted rats. materials and methods:female wistar rats, weighing between 230-260 g were used in this study. morphine addicted rats were generated by subcutaneous injection of increasi...

Journal: :Heart 2002
D C Shah M Haïssaguerre P Jaïs

Following the remarkable success of catheter based ablation techniques in curing regular supraventricular tachycardias, the attention of the electrophysiological community has turned upon atrial fibrillation based on the assumption that if surgical incisions with a knife can be duplicated by point by point lesions, a catheter based technique should provide results equivalent to the Maze procedu...

Journal: :acta medica iranica 0
mohammad hassan khalessi

fourteen patients with bilateral low frequency sensorineural hearing loss were found with disproportionate speech discrimination scores. these patients were submmitted to a comprehensive audiological, electrophysiological, neurological, and radiological battery of investigation. the results pointed to a lesion probably in the central auditory pathway.

2018
Osamu Hiwaki Hideki Miyaguchi

Conventional techniques for the noninvasive measurement of brain activity involve critical limitations in spatial or temporal resolution. Here, we propose the method for noninvasive brain function measurement with high spatiotemporal resolution using optical signals. We verified that diffused near-infrared light penetrating through the upper jaw and into the skull, which we term as optoencephal...

Journal: :Electronics 2023

Brain–computer interfacing has been applied in a range of domains including rehabilitation, neuro-prosthetics, and neurofeedback. Neuroimaging techniques provide insight into the structural functional aspects brain. There is need to identify, map understand various areas brain together with their functionally active roles for accurate efficient design brain–computer interface. In this review, a...

Journal: :Npg Asia Materials 2023

Abstract Various electrophysiological and imaging techniques have been studied for the diagnosis treatment of epilepsy. In particular, electrocorticography (ECoG) provides valuable information that can guide clinical patients with Currently, it is necessary to define benefits ECoG in free-moving animals Here, we present results simultaneous recordings multiple cortical sites responsive neurosti...

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