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Neuroimage. 2015 Oct 1;119:164-74. doi: 10.1016/j.neuroimage.2015.06.050. Epub 2015 Jun 24.

The human voice areas: Spatial organization and inter-individual variability in temporal and extra-temporal cortices.

Author information

1
Cente for Clinical Brain Sciences, Neuroimaging Sciences, The University of Edinburgh, United Kingdom. Electronic address: cyril.pernet@ed.ac.uk.
2
Institute of Neuroscience and Psychology, University of Glasgow, United Kingdom.
3
Institut des Neurosciences de La Timone, UMR 7289, CNRS & Université Aix-Marseille, France.
4
Department of Psychology, Stanford University, Stanford, USA.
5
Cognition and Brain Sciences Unit, Medical Research Council, Cambridge, United Kingdom.
6
School of Psychology, Bangor University, United Kingdom.
7
Faculty of Psychology and Neuroscience, Maastricht University, The Netherlands.
8
Cuban Center for Neuroscience, Cuba.
9
Institute of Neuroscience and Psychology, University of Glasgow, United Kingdom; Institut des Neurosciences de La Timone, UMR 7289, CNRS & Université Aix-Marseille, France; Département de Psychologie, Université de Montréal, Canada. Electronic address: pascal.belin@univ-amu.fr.

Abstract

fMRI studies increasingly examine functions and properties of non-primary areas of human auditory cortex. However there is currently no standardized localization procedure to reliably identify specific areas across individuals such as the standard 'localizers' available in the visual domain. Here we present an fMRI 'voice localizer' scan allowing rapid and reliable localization of the voice-sensitive 'temporal voice areas' (TVA) of human auditory cortex. We describe results obtained using this standardized localizer scan in a large cohort of normal adult subjects. Most participants (94%) showed bilateral patches of significantly greater response to vocal than non-vocal sounds along the superior temporal sulcus/gyrus (STS/STG). Individual activation patterns, although reproducible, showed high inter-individual variability in precise anatomical location. Cluster analysis of individual peaks from the large cohort highlighted three bilateral clusters of voice-sensitivity, or "voice patches" along posterior (TVAp), mid (TVAm) and anterior (TVAa) STS/STG, respectively. A series of extra-temporal areas including bilateral inferior prefrontal cortex and amygdalae showed small, but reliable voice-sensitivity as part of a large-scale cerebral voice network. Stimuli for the voice localizer scan and probabilistic maps in MNI space are available for download.

KEYWORDS:

Amygdala; Auditory cortex; Functional magnetic resonance imaging; Inferior prefrontal cortex; Superior temporal gyrus; Superior temporal sulcus; Voice

PMID:
26116964
PMCID:
PMC4768083
DOI:
10.1016/j.neuroimage.2015.06.050
[Indexed for MEDLINE]
Free PMC Article

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