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Brief Latency Click‐Evoked Potentials During Waking and Sleep in Man
Author(s) -
Amadeo Marco,
Shagass Charles
Publication year - 1973
Publication title -
psychophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.661
H-Index - 156
eISSN - 1469-8986
pISSN - 0048-5772
DOI - 10.1111/j.1469-8986.1973.tb00523.x
Subject(s) - psychology , scalp , arousal , sleep (system call) , audiology , latency (audio) , stimulation , electroencephalography , evoked potential , neuroscience , sleep onset , insomnia , medicine , psychiatry , computer science , electrical engineering , anatomy , engineering , operating system
Very early auditory evoked potentials, commencing from 1 to 2 msec after stimulation, can be recorded from human scalp by averaging; they appear to be generated in the VIII nerve and brain stem structures. This study was conducted to obtain data concerning possible variations of these early auditory responses with sleep in man. Our results show little or no change in the amplitude and latency characteristics of these potentials from waking to sleep or between sleep stages. Prolonged stimulation, during waking or sleep, produced increases of latency and a tendency for decrease of amplitude. The findings were interpreted to indicate that changes in latency and amplitude of later components of auditory evoked responses during sleep occur at levels above the brain stem. They also support the view that the increased threshold for auditory arousal associated with sleep is mediated centrally rather than peripherally.