Journal of Undergraduate Research
Keywords
auditory stimulus, auditory evoked potential, AEP, intra- stimulus intervals
College
David O. McKay School of Education
Department
Communication Disorders
Abstract
When a person is presented with a tone pip or a click, his or her brain waves, in response to the auditory stimulus can be measured. This response is called the auditory evoked potential (AEP). AEPs can be classified as short-, middle-, or long-latency depending on how long after the stimulus they occur. The P50 wave lies in the middle latency series and occurs approximately 50 ms after the stimulus is presented. Gating is a phenomenon that occurs in the thalamus portion of the brain when identical target stimuli are presented in pairs. The amplitude the P50 wave of the second stimulus in the pair is lower. This reduction in amplitude represents a suppression of non-novel stimuli and is expressed as a percentage amplitude reduction between the pair of stimuli.
Recommended Citation
Kimball, Mandi A. and McPherson, Dr. David L.
(2014)
"The Effect of Variable Intra-stimulus Interval on the Auditory P50 Gating Response,"
Journal of Undergraduate Research: Vol. 2014:
Iss.
1, Article 9.
Available at:
https://scholarsarchive.byu.edu/jur/vol2014/iss1/9