نتایج جستجو برای: evoked response variability

تعداد نتایج: 1164419  

Journal: :asian journal of sports medicine 0
maman paul faculty of sports medicine and physiotherapy, guru nanak dev, university, amritsar-143005, india kanupriya garg jaspal singh sandhu

conclusion the results of the study suggest that biofeedback training may help to train stressed athletes to acquire a control over their psychophysiological processes, thus helping an athlete to perform maximally. results two way repeated measure anova was used to simultaneously compare within and between group differences. response time, concentration, heart rate variability, respiration rate...

Journal: :Journal of autism and developmental disorders 2015
Sarah M Haigh David J Heeger Ilan Dinstein Nancy Minshew Marlene Behrmann

Previous findings have shown that individuals with autism spectrum disorder (ASD) evince greater intra-individual variability (IIV) in their sensory-evoked fMRI responses compared to typical control participants. We explore the robustness of this finding with a new sample of high-functioning adults with autism. Participants were presented with visual, somatosensory and auditory stimuli in the s...

2001
T. Ward

A stochastic model for visual evoked response generation is proposed based on a compound neurological generator approach. Participation of individual generators is stochastically modelled in a physiologically realistic manner that captures the inherent variability in latencies and amplitudes associated with the component phases of the response. The model is invertible such that decomposition of...

2015
Jingxuan Wang Jianren Lu Chen Li Lei Xu Xiaofei Li Lan Tian

BACKGROUND Auditory neural stimulation with pulsed infrared radiation has been proposed as an alternative method to activate the auditory nerves in vivo. Infrared wavelengths from 1800-2150 nm with high water absorption were mainly selected in previous studies. However, few researchers have used the short-wavelength infrared (SWIR) for auditory nerve stimulation and limited pulse parameters var...

Journal: :auditory and vestibular research 0
khadije toomaj department of pediatrics, imam khomeini hospital, tehran university of medical sciences, tehran, iran parvin akbariasbagh department of pediatrics, imam khomeini hospital, tehran university of medical sciences, tehran, iran alireza karimi yazdi otorhinolaryngology research center, tehran university of medical sciences, tehran, iran yahya aghighi department of pediatrics, imam khomeini hospital, tehran university of medical sciences, tehran, iran seyyed reza raeeskarami department of pediatrics, imam khomeini hospital, tehran university of medical sciences, tehran, iran fariba eslambol nassaj department of audiology, imam khomeini hospital, tehran university of medical sciences, tehran, iran

background and aim: kawasaki disease (kd) is an acute childhood febrile illness with world­wide incidence and the highest incidence occurs in asian children, with coronary arteritis being the main complication. sensorineural hearing loss (snhl) has also been described as a comp­lication of kd in several articles. the aim of this study was to evaluate the prevalence of snhl in patients with kd t...

Journal: :Developmental science 2014
Dana L Strait Jessica Slater Victor Abecassis Nina Kraus

Attention induces synchronicity in neuronal firing for the encoding of a given stimulus at the exclusion of others. Recently, we reported decreased variability in scalp-recorded cortical evoked potentials to attended compared with ignored speech in adults. Here we aimed to determine the developmental time course for this neural index of auditory attention. We compared cortical auditory-evoked v...

Journal: :Journal of neurophysiology 2013
Bryan M Krause Matthew I Banks

The neural mechanisms of sensory responses recorded from the scalp or cortical surface remain controversial. Evoked vs. induced response components (i.e., changes in mean vs. variance) are associated with bottom-up vs. top-down processing, but trial-by-trial response variability can confound this interpretation. Phase reset of ongoing oscillations has also been postulated to contribute to senso...

Journal: :NeuroImage 2002
Vincent P Clark

Previous studies using event-related potentials (ERPs) have identified a variety of brain regions that respond to rare nontarget distractor stimuli presented in the visual oddball task. By contrast, event-related functional magnetic resonance imaging (ER-fMRI) studies using similar stimuli have found little or no response in these same regions, suggesting that ER-fMRI may be less sensitive than...

Journal: :Neuroreport 2009
Mehmet Akif Coskun Larry Varghese Stacy Reddoch Eduardo M Castillo Deborah A Pearson Katherine A Loveland Andrew C Papanicolaou Bhavin R Sheth

One of the key ideas regarding atypical connectivity in autistic brains is the hypothesis of noisier networks. The systems level version of this hypothesis predicts reduced reliability or increased variability in the evoked responses of individuals with autism. Using magnetoencephalography, we examined the response of individuals with autism spectrum disorder versus matched typically developing...

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