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Lookup NU author(s): Dr Bashar Awwad Shiekh Hasan
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
© 2016 The Author(s). Recognizing familiar individuals is achieved by the brain by combining cues from several sensory modalities, including the face of a person and her voice. Here we used functional magnetic resonance (fMRI) and a whole-brain, searchlight multi-voxel pattern analysis (MVPA) to search for areas in which local fMRI patterns could result in identity classification as a function of sensory modality. We found several areas supporting face or voice stimulus classification based on fMRI responses, consistent with previous reports; the classification maps overlapped across modalities in a single area of right posterior superior temporal sulcus (pSTS). Remarkably, we also found several cortical areas, mostly located along the middle temporal gyrus, in which local fMRI patterns resulted in identity "cross-classification": vocal identity could be classified based on fMRI responses to the faces, or the reverse, or both. These findings are suggestive of a series of cortical identity representations increasingly abstracted from the input modality.
Author(s): Awwad Shiekh Hasan B, Valdes-Sosa M, Gross J, Belin P
Publication type: Article
Publication status: Published
Journal: Scientific Reports
Online publication date: 24/11/2016
Acceptance date: 27/10/2016
Date deposited: 03/04/2017
ISSN (electronic): 2045-2322
Publisher: Nature Publishing Group
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