Physiological correlates of masking release

Hyojin Kim*, Bastian Epp

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

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Abstract

Masking release is one example of auditory object segregation where the masked threshold of a target sound decreases in the presence of beneficial cues. Two such cues are comodulation and interaural phase disparity (IPD) underlying the phenomena of comodulation masking release (CMR) and binaural masking level difference (BMLD) respectively. While the effect of these cues have been shown in behavioral studies, little is known about the underlying physiological mechanisms of masking release. In this study, we postulated an ”internal signal-to-noise ratio (iSNR)” that reflects neuronal representation of a masked tone. As the proxy for iSNR, we investigated the applicability of late auditory evoked potentials (LAEPs). We added an onset asynchrony cue with comodulation and IPD cues. Results showed that onset asynchrony had a negative effect on CMR while it did not affect BMLD. The P2 component of the vertex LAEPs was suggested to be an objective measure of iSNR. This will provide us information about whether temporal contexts affect the neuronal representation of CMR and BMLD at the level of the auditory cortex.
Original languageEnglish
Title of host publicationProceedings of the International Symposium on Auditory and Audiological Research : Auditory Learning in Biological and Artificial Systems
Volume7
PublisherThe Danavox Jubilee Foundation
Publication date2020
Pages453-460
Publication statusPublished - 2020
EventInternational Symposium on Auditory and Audiological Research: Auditory Learning in Biological and Artificial Systems - Nyborg, Denmark
Duration: 21 Aug 201923 Aug 2019
http://isaar.eu

Conference

ConferenceInternational Symposium on Auditory and Audiological Research
CountryDenmark
CityNyborg
Period21/08/201923/08/2019
Internet address
SeriesProceedings of the International Symposium on Audiological and Auditory Research
Volume7
ISSN2596-5522

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