Do you think full-skull (cap) montages produce more reliable P300 responses?
Answer
Caps, in an of themselves, do not produce better P300s. Rather, caps allow for a broader coverage of the head surface and allows one to record the P300 across the head. Cz may not be the most optimal site on the head. It may be Pz. It depends on what your goal is with measuring P300.
Samuel R. Atcherson, Ph.D. received his undergraduate and masters degrees in Communication Sciences and Disorders from the University of Georgia and his doctorate with emphasis in auditory electrophysiology from the University of Memphis. He is currently Associate Professor in the Department of Audiology and Speech Pathology at the University of Arkansas at Little Rock in consortium with the University of Arkansas for Medical Sciences. He is the author of over 60 publications including 2 books, 4 book chapters, and 25 peer-reviewed articles, and he has given over 100 presentations on topics involving auditory rehabilitation, assistive technology, clinical electrophysiology, age-related hearing loss, auditory processing disorders, and health literacy. Dr. Atcherson is a bilateral cochlear implantee and is past president of the Association of Medical Professionals with Hearing Losses.
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