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Action expertise reduces brain activity for audiovisual matching actions: An fmri study with expert drummers

Petrini, Karin - Pollick, Frank E. - Dahl, Sofia - McAleer, Phil - McKay, Lawrie - Rocchesso, Davide - Waadeland, Carl Haakon - Love, Scott - Avanzini, Federico - Puce, Aina (2011) Action expertise reduces brain activity for audiovisual matching actions: An fmri study with expert drummers. NeuroImage . ISSN 1053-8119 (In pubblicazione)

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Abstract

When we observe someone perform a familiar action, we can usually predict what kind of sound that action will produce. Musical actions are over-experienced by musicians and not by non-musicians, and thus offer a unique way to examine how action expertise affects brain processes when the predictability of the produced sound is manipulated. We used functional magnetic resonance imaging to scan 11 drummers and 11 age- and gender-matched novices who made judgements on point-light drumming movements presented with sound. In Experiment 1, sound was synchronised or desynchronised with drumming strikes, while in Experiment 2 sound was always synchronised, but the natural covariation between sound intensity and velocity of the drumming strike was maintained or eliminated. Prior to MRI scanning, each participant completed psychophysical testing to identify personal levels of synchronous and asynchronous timing to be used in the two fMRI activation tasks. In both experiments, the drummers’ brain activation was reduced in motor and action representation brain regions when sound matched the observed movements, and was similar to that of novices when sound was mismatched. This reduction in neural activity occurred bilaterally in the cerebellum and left parahippocampal gyrus in Experiment 1, and in the right inferior parietal lobule, inferior temporal gyrus, middle frontal gyrus and precentral gyrus in Experiment 2. Our results indicate that brain functions in action-sound representation areas are modulated by multimodal action expertise.

Tipologia del documento:Articolo
Parole chiave:biological motion; audiovisual synchrony
Soggetti:Area 11 - Scienze storiche, filosofiche, pedagogiche e psicologiche > M-PSI/01 Psicologia generale
Area 01 - Scienze matematiche e informatiche > INF/01 Informatica
Struttura:Dipartimenti > Dadi Teorie e pratiche delle arti e del disegno industriale (soppresso)
Codice ID:261
Depositato da :Davide Rocchesso
Depositato il :15 Mar 2011 09:01
Ultima modifica:30 Giu 2011 08:15

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