Dual Representation of the Auditory Space.

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State: Public
Version: Final published version
License: CC BY 4.0
Serval ID
serval:BIB_35413573F4B6
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Dual Representation of the Auditory Space.
Journal
Brain sciences
Author(s)
Clarke S., Da Costa S., Crottaz-Herbette S.
ISSN
2076-3425 (Print)
ISSN-L
2076-3425
Publication state
Published
Issued date
24/05/2024
Peer-reviewed
Oui
Volume
14
Number
6
Pages
535
Language
english
Notes
Publication types: Journal Article ; Review
Publication Status: epublish
Abstract
Auditory spatial cues contribute to two distinct functions, of which one leads to explicit localization of sound sources and the other provides a location-linked representation of sound objects. Behavioral and imaging studies demonstrated right-hemispheric dominance for explicit sound localization. An early clinical case study documented the dissociation between the explicit sound localizations, which was heavily impaired, and fully preserved use of spatial cues for sound object segregation. The latter involves location-linked encoding of sound objects. We review here evidence pertaining to brain regions involved in location-linked representation of sound objects. Auditory evoked potential (AEP) and functional magnetic resonance imaging (fMRI) studies investigated this aspect by comparing encoding of individual sound objects, which changed their locations or remained stationary. Systematic search identified 1 AEP and 12 fMRI studies. Together with studies of anatomical correlates of impaired of spatial-cue-based sound object segregation after focal brain lesions, the present evidence indicates that the location-linked representation of sound objects involves strongly the left hemisphere and to a lesser degree the right hemisphere. Location-linked encoding of sound objects is present in several early-stage auditory areas and in the specialized temporal voice area. In these regions, emotional valence benefits from location-linked encoding as well.
Keywords
7T fMRI, auditory belt areas, auditory evoked potentials, auditory spatial cues, lateralization, primary auditory cortex, sound localization
Pubmed
Web of science
Open Access
Yes
Create date
02/07/2024 10:13
Last modification date
13/07/2024 7:09
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