Fluctuations of N1 Amplitude in Relation to Click-Intensity Discrimination

1 October 1969

journal article
Published by Acoustical Society of America (ASA) in The Journal of the Acoustical Society of America

Vol. 46 (4B) , 969-978
https://doi.org/10.1121/1.1911817

Abstract

Round-window potentials evoked by clicks were recorded from anesthetized guinea pigs. By comparing N1 amplitudes on line, it was possible to compute physiological difference limens for click intensity. The method requires no assumptions about the underlying distributions of neural effect. Weber functions were generated with and without a continuous masking noise. The effects of click intensity and of background noise paralleled those previously reported for human listeners. A neural model was described in which variability of N1 amplitude turned out to be the principal parameter.