Asymmetries in pitch perception of dichotic chords and middle latency evoked potentials
作者:
L. J. Hood,
C. I. Berlin,
D. J. Baker,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1984)
卷期:
Volume 75,
issue S1
页码: 81-82
ISSN:0001-4966
年代: 1984
DOI:10.1121/1.2021635
出版商: Acoustical Society of America
数据来源: AIP
摘要:
The dominance of one ear over the other in the perception of pitch of dichotic chords has been reported by Efron and Yund [J. Acoust. Soc. Am.59, 889–898 (1976)] and in subsequent studies by that group. The present investigation addressed the existence of correlations between psychophysical and electrophysiological asymmetries. Specifically, the relation between ear dominance measured psychophysically using the Efron paradigm and right‐left asymmetries in middle latency auditory evoked potentials was examined in ten normal‐hearing adult subjects. Absolute and interwave latencies were obtained for middle latency responses to right and left monaural, binaural, and dichotic presentation conditions using tonal stimuli. Rank order correlation coefficients were used to compare right‐left ear and hemifield evoked potential latency differences to measures of ear dominance. Results indicated that latency measures, particularly for components involving wavePbof the middle latency response, correlated with the direction of ear dominance. The characteristics of these correlations will be discussed. [Supported by NINCDS ♯NS 11647, the Louisiana Lions Eye Foundation, and the Eye and Ear Foundation.]
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