نتایج جستجو برای: wave latency

تعداد نتایج: 261332  

پایان نامه :دانشگاه آزاد اسلامی واحد علوم پزشکی تهران - دانشکده پزشکی 1389

ارائه راهکارهایی مناسب جهت تشخیص دقیق تر و بهتر گلوکوم مادرزادی و جلوگیری از پیشرفت آن. روش مطالعه: 50 کودک مبتلا به گلوکوم مادرزادی (گروه case) و 50کودک سالم (گروه control) در این مطالعه مورد بررسی قرار گرفتند. هر دو گروه مورد معاینه قرار گرفتند وتست پتانسیل برانگیخته از بینایی((vep روی آنها انجام شد. متغیرهای اندازه گیری شده شامل تاخیر فاز(latency) ودامنه(amplitude) بودند.نتایج ثبت و فراوا...

Objectives: Carpal tunnel syndrome (CTS) is a common peripheral entrapment neuropathy with squeezing of the median nerve and the patient is unable to function properly. There are different physiotherapy interventions for the management of these patients and recently, shock wave therapy and low-power laser (LPL) have been widely used, but there is no strong evidence comparing the effect of shock...

Journal: :Anesthesiology 2009
Bertram C A Scheller Michael Daunderer Gordon Pipa

BACKGROUND Brainstem auditory-evoked responses (BAEP) have been reported to be unchanged in the presence of drugs used for induction and maintenance of general anesthesia. The aim of this study was to investigate if the signal segments after the auditory stimulus that are used to average the evoked response change under the influence of general anesthesia. METHODS BAEPs of 156 patients schedu...

Journal: :American journal of audiology 1994
C L Mackersie D R Stapells

Wave I latencies were used to predict the magnitude of conductive components in 80 infants and young children (122 ears) with normal hearing, conductive hearing loss due to otitis media or aural atresia, sensorineural hearing loss, and mixed hearing loss. Two prediction methods were used. The first method based predictions on a 0.03-ms wave I latency delay for each decibel of conductive hearing...

Journal: :American journal of physiology. Regulatory, integrative and comparative physiology 1998
Torbjörn Åkerstedt Ken Hume David Minors Jim Waterhouse

The purpose of the present study was to evaluate the simultaneous effects on sleep of prior time awake (PRW) and time of day (TOD). Eight male subjects spent 13 days in an isolated sleep lab and had three 8-h baseline sleeps and then 18 4-h sleeps, distributed to provide three sleeps starting at 2400, 0400, 0800, 1200, 1600, and 2000. The three sleeps were preceded by 4, 8, and 12 h of PRW, res...

2017
Yi-Ling Chien Shao-Wei Wu Chih-Pang Chu Sung-Tsang Hsieh Chi-Chao Chao Susan Shur-Fen Gau

Sensory disturbance is associated with socio-emotional problems in individuals with autism spectrum disorder (ASD). Most studies assess sensory symptoms by self-reports, which are largely limited by the language ability and self-awareness of the individuals. This study aims to investigate sensory disturbance by contact heat-evoked potentials (CHEP) in ASD individuals, and to examine the clinica...

Journal: :Sleep 2004
Maurice M Ohayon Mary A Carskadon Christian Guilleminault Michael V Vitiello

OBJECTIVES The purposes of this study were to identify age-related changes in objectively recorded sleep patterns across the human life span in healthy individuals and to clarify whether sleep latency and percentages of stage 1, stage 2, and rapid eye movement (REM) sleep significantly change with age. DESIGN Review of literature of articles published between 1960 and 2003 in peer-reviewed jo...

Journal: :Nihon Jibiinkoka Gakkai kaiho 1987
J Takase

The present study represents my attempt to investigate the feasibility of estimating pure tone hearing threshold from the latency and threshold of wave V of ABR to one-wave stimulation with 3KHz sine wave. The followings are results and conclusions obtained from this study. 1) In inner ear deafness, the ABR to clicks reflects responses from the limited area with a relatively high frequency rang...

Journal: :Journal of the Japanese Physical Therapy Association = Rigaku ryoho 2006
Hiroaki Hirose Toshiaki Suzuki Tomoaki Shimada

To clarify the excitability of spinal motor neuron function after transcutaneous electrical stimulation (TES), we investigated the F-wave before and after TES. Fourteen healthy volunteers with a mean age of 23.4 years were studied. TES was applied to the flexor hallucis brevis (FHB) for 15 minutes. F-wave and M-wave were recorded from the FHB after tibial nerve stimulation at the ankle before T...

Journal: :Acta neurochirurgica. Supplement 2012
Shadnaz Asgari Paul M Vespa Marvin Bergsneider Xiao Hu

Pulsatile intracranial pressure (ICP) is a key to the understanding of several neurological disorders in which compliance is altered, e.g., hydrocephalus. A recently proposed model suggests that ICP pulse is a standing wave and not a transmitted wave. The present work, aimed at obtaining a better understanding of the pulsatility in the cranium, tries to test the following hypotheses: first, ICP...

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