Within Average Variability of the Acoustically Evoked Response

Abstract

Special thanks is extended to Mr. P. David Key for his unself ish contribution of time in helping with the intricacies of the instru mentation required for the completion of this work.A debt of gratitude is owed to Janice R. Keating, wife of the author, whose encouragement and attitude thwarted seemingly overwhelm ing odds on numerous occasions throughout undergraduate and graduate school preparation, and who, in addition, has found time to prepare a more than adequate home atmosphere for our two children.Appreciation is extended to those individuals who gave of their time to sit as subjects for this study and to

Summary of the N1-P2 Cortical Auditory Evoked Potential to Estimate the Auditory Threshold in Adults

“…In general, a larger or less variable response is recorded when the subject is asked to read a book or attend to the stimuli (e.g., count the stimuli) rather than simply sit with eyes open. 13,14 It is generally held that the N1-P2 response is attenuated by sleep (which is therefore to be avoided when testing), but many studies have shown a more complex picture, in which response latencies increase during the stages of sleep but the amplitude of the response may either increase or decrease, depending on the sleep stage. 15,16 Unless the stage of sleep is assessed and controlled, it is prudent to employ a test protocol in which sleep is avoided.…”