Electrically evoked whole‐nerve action potentials: Parametric data from the cat
作者:
Carolyn J. Brown,
Paul J. Abbas,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1990)
卷期:
Volume 88,
issue 5
页码: 2205-2210
ISSN:0001-4966
年代: 1990
DOI:10.1121/1.400117
出版商: Acoustical Society of America
数据来源: AIP
摘要:
In a companion paper [Brownetal., J. Acoust. Soc. Am.88, 1385–1391 (1990)], a method for recording the electrically evoked whole‐nerve action potential in human cochlear implant users was reported. The procedure for recording the response requires that two biphasic current pulses, a ‘‘masker’’ and a ‘‘probe,’’ be presented at a rate and level sufficient to drive the auditory nerve into a refractory state. The present study was designed to assess the sensitivity of that recording technique to variations in stimulation parameters. The experiments described in this paper demonstrate that: (1) the EAP as recorded in the cat is triphasic and is defined by two negative peaks occurring at latencies of approximately 0.26 and 0.82 ms; (2) EAP amplitude is independent of the level of the masker stimulus for current levels equal to or greater than the current level of the probe stimulus; and (3) the time course of recovery of the EAP from the refractory state is stable over a range of both probe and masker current levels.
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