Auditory afterimageTonotopic representation in the auditory cortex
作者:
Ellen Hoke,
Bernhard Ross,
Manfried Hoke,
期刊:
NeuroReport
(OVID Available online 1998)
卷期:
Volume 9,
issue 13
页码: 3065-3068
ISSN:0959-4965
年代: 1998
出版商: OVID
关键词: Afterimage;Auditory system;Neuromagnetic source imaging;Sustained response;Tonotopic organization
数据来源: OVID
摘要:
THE auditory afterimage is a sensation which occurs for several seconds after the exciting acoustic signal has been switched off, and which roughly corresponds to the inverse of the spectrum of the exciting signal. In contrast to the well-known visual afterimage, the physiological mechanism generating the auditory afterimage has been questionable so far. Neuromagnetic source imaging revealed that the source of cortical neural activity which coincides with the sensation of the afterimage is located in the auditory cortex and exhibits a tonotopic organization similar to that of the sustained response which occurs during continuous presentation of an acoustic stimulus. It is concluded that the neural processes leading to the generation of the two phenomena −sustained response and auditory afterimag e—are similar.
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