Titre
Where sound position influences sound object representations: a 7-T fMRI study.
Type
article
Institution
UNIL/CHUV/Unisanté + institutions partenaires
Périodique
Auteur(s)
van der Zwaag, W.
Auteure/Auteur
Gentile, G.
Auteure/Auteur
Gruetter, R.
Auteure/Auteur
Spierer, L.
Auteure/Auteur
Clarke, S.
Auteure/Auteur
Liens vers les personnes
Liens vers les unités
ISSN
1095-9572[electronic], 1053-8119[linking]
Statut éditorial
Publié
Date de publication
2011
Volume
54
Numéro
3
Première page
1803
Dernière page/numéro d’article
1811
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't Publication
Résumé
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.
PID Serval
serval:BIB_89D207B80A34
PMID
Date de création
2010-11-02T07:30:01.517Z
Date de création dans IRIS
2025-05-21T04:13:04Z