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Symposium on basic ear research. III. Auditory evoked averaged responses in monkeys
Author(s) -
Nagafuchi Masaaki,
Cody D. Thane R.
Publication year - 1972
Publication title -
the laryngoscope
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.181
H-Index - 148
eISSN - 1531-4995
pISSN - 0023-852X
DOI - 10.1288/00005537-197207000-00003
Subject(s) - latency (audio) , audiology , tone burst , pure tone , anesthesia , medicine , hearing loss , computer science , telecommunications
Averaged responses evoked by tone‐bursts were investigated in the alert, anesthetized, and sedated Rhesus monkey. Identified were a short latency (peak 13.5 msec) triphasic extracranial response and a longer latency (P 1 38 msec, N 1 93 msec, P 2 152 msec, N 2 199 msec) polyphasic intracranial response. The early and late components of the intracranial response seemed to originate in different auditory centers. It was concluded that, with intracranially implanted electrodes, determining averaged response thresholds for tone‐bursts in the monkey sedated with phencyclidine hydrochloride is a reasonably accurate method of estimating behavioral thresholds of hearing.