Cerebral correlates and statistical criteria of cross-modal face and voice integration

Love, S.A., Pollick, F.E. and Latinus, M. (2011) Cerebral correlates and statistical criteria of cross-modal face and voice integration. Seeing and Perceiving, 24(4), pp. 351-367. (doi:10.1163/187847511X584452)

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Publisher's URL: http://dx.doi.org/10.1163/187847511X584452

Abstract

Perception of faces and voices plays a prominent role in human social interaction, making multisensory integration of cross-modal speech a topic of great interest in cognitive neuroscience. How to define po- tential sites of multisensory integration using functional magnetic resonance imaging (fMRI) is currently under debate, with three statistical criteria frequently used (e.g., super-additive, max and mean criteria). In the present fMRI study, 20 participants were scanned in a block design under three stimulus conditions: dynamic unimodal face, unimodal voice and bimodal face–voice. Using this single dataset, we examine all these statistical criteria in an attempt to define loci of face–voice integration. While the super-additive and mean criteria essentially revealed regions in which one of the unimodal responses was a deactivation, the max criterion appeared stringent and only highlighted the left hippocampus as a potential site of face– voice integration. Psychophysiological interaction analysis showed that connectivity between occipital and temporal cortices increased during bimodal compared to unimodal conditions. We concluded that, when investigating multisensory integration with fMRI, all these criteria should be used in conjunction with ma- nipulation of stimulus signal-to-noise ratio and/or cross-modal congruency.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Pollick, Professor Frank and Latinus, Dr Marianne and Love, Mr Scott
Authors: Love, S.A., Pollick, F.E., and Latinus, M.
Subjects:B Philosophy. Psychology. Religion > BF Psychology
College/School:College of Science and Engineering > School of Psychology
Journal Name:Seeing and Perceiving
Publisher:Brill
ISSN:1878-4755
ISSN (Online):1878-4763
Copyright Holders:Copyright © 2011 Brill
First Published:First published in Seeing and Perceiving 24(4):351-367
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
449881Social interaction - a cognitive-neurosciences approachSimon GarrodEconomic & Social Research Council (ESRC)ES/E020933/1Cognitive Neuroimaging & Neuroengineering Technologies