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Brainstem auditory evoked responses in man. 1: Effect of stimulus rise-fall time and durationShort latency (under 10 msec) responses elicited by bursts of white noise were recorded from the scalps of human subjects. Response alterations produced by changes in the noise burst duration (on-time), inter-burst interval (off-time), and onset and offset shapes were analyzed. The latency of the most prominent response component, wave V, was markedly delayed with increases in stimulus rise time but was unaffected by changes in fall time. Increases in stimulus duration, and therefore in loudness, resulted in a systematic increase in latency. This was probably due to response recovery processes, since the effect was eliminated with increases in stimulus off-time. The amplitude of wave V was insensitive to changes in signal rise and fall times, while increasing signal on-time produced smaller amplitude responses only for sufficiently short off-times. It was concluded that wave V of the human auditory brainstem evoked response is solely an onset response.
Document ID
19750020624
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Hecox, K. (California Univ. La Jolla, CA, United States)
Squires, N. (California Univ. La Jolla, CA, United States)
Galambos, R. (California Univ. La Jolla, CA, United States)
Date Acquired
September 3, 2013
Publication Date
January 1, 1975
Subject Category
Aerospace Medicine
Report/Patent Number
NASA-CR-143257
Accession Number
75N28697
Funding Number(s)
CONTRACT_GRANT: PHS-NS-10482-01
CONTRACT_GRANT: NGR-05-009-198
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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