نتایج جستجو برای: wave latency
تعداد نتایج: 261332 فیلتر نتایج به سال:
CONFLICT OF INTEREST NONE DECLARED. AIM The aim of this study is to present differences of amplitude and latency of P300 wave between examinees with mild cognitive impairment and examinees from the control group. METHODS A cross-section study was performed between April 1(st) and July 10(th) 2012, with the diagnosis of mild cognitive impairment as the main criterion for inclusion. In the tw...
Background: Auditory brainstem response (A.B.R) is one of the most important electrophysiological tests in evaluating of auditory system, especially for diagnosing of auditory nerve and brainstem disorders. It is a non-invasive test and has reliability and validity characteristic. There is no contra-indication for this test. One of the most important of stimulation parameters of A.B.R is click ...
This study was designed to evaluate maximum length sequences-auditory brainstem responses (MLS-ABR) in children with auditory processing disorders and to compare these results with a normal control group matched for age, intelligence, and gender. Although each waveform was analyzed for the presence of waves I, III, and V, the primary focus was wave V. Although absolute latency measures for wave...
We recorded ERG responses at the cornea of cat and monkey and identified the initial negative wave elicited by very dim stimuli as the scotopic threshold response (STR) comparable to that previously recognized by intraretinal recordings of cat. The STR, but not the photoreceptor a-wave, was eliminated by intravitreal aspartate in both cat and monkey, which demonstrated that the STR origin was p...
PURPOSE To investigate whether or not thicker retinal nerve fiber layer (RNFL) in retinitis pigmentosa (RP) patients relates to functional abnormalities of the photoreceptors. METHODS Optical coherence tomography-based RNFL thickness was measured by Stratus-3™ (Zeiss, Basel, Switzerland) optical coherence tomography and electroretinogram (ERG) recordings made using the RETI-port(®) system (Ro...
Aims. The detection and measurement of gravitational-waves from coalescing neutron-star binary systems is an important science goal for ground-based gravitational-wave detectors. In addition to emitting gravitational-waves at frequencies that span the most sensitive bands of the LIGO and Virgo detectors, these sources are also amongst the most likely to produce an electromagnetic counterpart to...
Wave pipelining offers a unique combination of high speed, low latency, and moderate power consumption. The construction of wave pipelines is benefited by the use of gates and buffers with data-independent delays and the knowledge of the interconnection delays. These two features are present in several SRAM-based field programmable gate arrays (FPGA’s): look-up tables (LUT’s) allow the designer...
Aim: To study the various electrophysiological changes in the motor conduction, sensory conduction and F wave latencies of acute Guillain-Barre Syndrome patients. Methods: Sixteen patients with acute GBS were included in this study. They were subjected to various nerve conduction studies (NCS) following standardized procedures. The mean values obtained for the various nerve conduction parameter...
Introduction: The hallmark of vitiligo is the disappearance of melanocytes from the skin due to an as yet unidentified mechanism. The presence of melanocytes in the auditory apparatus suggests that this system could possibly be affected by vitiligo, which targets the melanocytes of the whole body and not just the skin.The purpose of this study was to assess the incidence of auditory alteration...
Background :Aging can cause loss of balance, which may lead to physical and psychological problems. As the role of the otolith organs in maintaining postural stability has been emphasized in recent years, the present study investigated the effect of aging on saccular function using cervical vestibular evoked myogenic potentials (cVEMP). Methods : The participants were assigned into two grou...
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