Where sound position influences sound object representations: a 7-T fMRI study.

Details

Serval ID
serval:BIB_89D207B80A34
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Where sound position influences sound object representations: a 7-T fMRI study.
Journal
Neuroimage
Author(s)
van der Zwaag W., Gentile G., Gruetter R., Spierer L., Clarke S.
ISSN
1095-9572[electronic], 1053-8119[linking]
Publication state
Published
Issued date
2011
Volume
54
Number
3
Pages
1803-1811
Language
english
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't Publication
Abstract
Evidence from human and non-human primate studies supports a dual-pathway model of audition, with partially segregated cortical networks for sound recognition and sound localisation, referred to as the What and Where processing streams. In normal subjects, these two networks overlap partially on the supra-temporal plane, suggesting that some early-stage auditory areas are involved in processing of either auditory feature alone or of both. Using high-resolution 7-T fMRI we have investigated the influence of positional information on sound object representations by comparing activation patterns to environmental sounds lateralised to the right or left ear. While unilaterally presented sounds induced bilateral activation, small clusters in specific non-primary auditory areas were significantly more activated by contra-laterally presented stimuli. Comparison of these data with histologically identified non-primary auditory areas suggests that the coding of sound objects within early-stage auditory areas lateral and posterior to primary auditory cortex AI is modulated by the position of the sound, while that within anterior areas is not.
Pubmed
Web of science
Create date
02/11/2010 8:30
Last modification date
20/08/2019 14:48
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