Hand gestures as visual prosody: BOLD responses to audio–visual alignment are modulated by the communicative nature of the stimuli
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- dc.contributor.author Biau, Emmanuel, 1985-ca
- dc.contributor.author Morís Fernández, Luis, 1982-ca
- dc.contributor.author Holle, Henningca
- dc.contributor.author Ávila, Césarca
- dc.contributor.author Soto-Faraco, Salvador, 1970-ca
- dc.date.accessioned 2016-11-14T08:09:27Z
- dc.date.issued 2016ca
- dc.description.abstract During public addresses, speakers accompany their discourse with spontaneous hand gestures (beats) that are tightly synchronized with the prosodic contour of the discourse. It has been proposed that speech and beat gestures originate from a common underlying linguistic process whereby both speech prosody and beats serve to emphasize relevant information. We hypothesized that breaking the consistency between beats and prosody by temporal desynchronization, would modulate activity of brain areas sensitive to speech–gesture integration. To this aim, we measured BOLD responses as participants watched a natural discourse where the speaker used beat gestures./nIn order to identify brain areas specifically involved in processing hand gestures with communicative intention, beat synchrony was evaluated against arbitrary visual cues bearing equivalent rhythmic and spatial properties as the gestures. Our results revealed that left MTG and IFG were specifically sensitive to speech synchronized with beats, compared to the arbitrary vision–speech pairing. Our results suggest that listeners confer beats a function of visual prosody, complementary to the prosodic structure of speech. We conclude that the emphasizing function of beat gestures in speech perception is instantiated through a specialized brain network sensitive to the communicative intent conveyed by a speaker with his/her hands.en
- dc.description.sponsorship This research was supported by the Ministerio de Economia y Competitividad (PSI2013-42626-P), AGAUR Generalitat de Catalunya (2014SGR856), and the European Research Council (StG-2010 263145).en
- dc.format.mimetype application/pdfca
- dc.identifier.citation Biau E, Moris Fernández L, Holle H, Avila C, Soto-Faraco S. Hand gestures as visual prosody: BOLD responses to audio–visual alignment are modulated by the communicative nature of the stimuli. NeuroImage. 2016;132:129-137. DOI: 10.1016/j.neuroimage.2016.02.018ca
- dc.identifier.doi http://dx.doi.org/10.1016/j.neuroimage.2016.02.018
- dc.identifier.issn 1053-8119ca
- dc.identifier.uri http://hdl.handle.net/10230/27496
- dc.language.iso engca
- dc.publisher Elsevierca
- dc.relation.ispartof NeuroImage. 2016;132:129-137
- dc.relation.projectID info:eu-repo/grantAgreement/EC/FP7/263145ca
- dc.relation.projectID info:eu-repo/grantAgreement/ES/1PE/PSI2013-42626-P
- dc.rights © Elsevier http://dx.doi.org/10.1016/j.neuroimage.2016.02.018ca
- dc.rights.accessRights info:eu-repo/semantics/openAccessca
- dc.subject.keyword Speech perceptionen
- dc.subject.keyword Gesturesen
- dc.subject.keyword Audiovisual speechen
- dc.subject.keyword Multisensory Integrationen
- dc.subject.keyword MTGen
- dc.subject.keyword FMRIen
- dc.title Hand gestures as visual prosody: BOLD responses to audio–visual alignment are modulated by the communicative nature of the stimulica
- dc.type info:eu-repo/semantics/articleca
- dc.type.version info:eu-repo/semantics/acceptedVersionca