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Title: Effect of intentional bias on agency attribution of animated motion: an event-related FMRI study.
Authors: Osaka, Naoyuki
Ikeda, Takashi
Osaka, Mariko
Author's alias: 苧阪, 直行
Issue Date: 14-Nov-2012
Publisher: Public Library of Science
Journal title: PloS one
Volume: 7
Issue: 11
Thesis number: e49053
Abstract: Animated movements of simple geometric shapes can readily be interpreted as depicting social events in which animate agents are engaged in intentional activity. However, the brain regions associated with such intention have not been clearly elucidated. In this study, intentional bias was manipulated using shape and pattern animations while measuring associated brain activity using event-related functional magnetic resonance imaging (fMRI). Twenty-five higher-intention involved and twenty-five lower-intention involved animations were presented to participants. Behavioral results showed that the degree of agency attribution of the mental state increased as intentional involvement increased. fMRI results revealed that the posterior superior temporal sulcus (STS), inferior temporal gyrus (ITG), inferior frontal gyrus (IFG), premotor, temporal pole, supramarginal gyrus, and superior parietal lobule (SPL) were activated while participants viewed the high-intention animations. In contrast, occipital, lingual, and middle frontal gyri were activated while the participants viewed the low-intention animations. These findings suggest that as agent attribution increases, the visual brain changes its functional role to the intentional brain and becomes a flexible network for processing information about social interaction.
Rights: © 2012 Osaka et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
URI: http://hdl.handle.net/2433/163076
DOI(Published Version): 10.1371/journal.pone.0049053
PubMed ID: 23155450
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