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Neural correlates of online cooperation during joint force production

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Title: Neural correlates of online cooperation during joint force production
Authors: Abe, Masaki O. Browse this author →KAKEN DB
Koike, Takahiko Browse this author →KAKEN DB
Okazaki, Shuntaro Browse this author →KAKEN DB
Sugawara, Sho K. Browse this author →KAKEN DB
Takahashi, Kohske Browse this author →KAKEN DB
Watanabe, Katsumi Browse this author →KAKEN DB
Sadato, Norihiro Browse this author →KAKEN DB
Keywords: Hyperscanning fMRI
Joint action
Issue Date: 1-May-2019
Publisher: Elsevier
Journal Title: Neuroimage
Volume: 191
Start Page: 150
End Page: 161
Publisher DOI: 10.1016/j.neuroimage.2019.02.003
PMID: 30739061
Abstract: During joint action, two or more persons depend on each other to accomplish a goal. This mutual recursion, or circular dependency, is one of the characteristics of cooperation. To evaluate the neural substrates of cooperation, we conducted a hyperscanning functional MRI study in which 19 dyads performed a joint force-production task. The goal of the task was to match their average grip forces to the target value (20% of their maximum grip forces) through visual feedback over a 30-s period; the task required taking into account other-produced force to regulate the self-generated one in real time, which represented cooperation. Time-series data of the dyad's exerted grip forces were recorded, and the noise contribution ratio (NCR), a measure of influence from the partner, was computed using a multivariate autoregressive model to identify the degree to which each participant's grip force was explained by that of their partner's, i.e., the degree of cooperation. Compared with the single force-production task, the joint task enhanced the NCR and activated the mentalizing system, including the medial prefrontal cortex, precuneus, and bilateral posterior subdivision of the temporoparietal junction (TPJ). In addition, specific activation of the anterior subdivision of the right TPJ significantly and positively correlated with the NCR across participants during the joint task. The effective connectivity of the anterior to posterior TPJ was upregulated when participants coordinated their grip forces. Finally, the joint task enhanced cross-brain functional connectivity of the right anterior TPJ, indicating shared attention toward the temporal patterns of the motor output of the partner. Since the posterior TPJ is part of the mentalizing system for tracking the intention of perceived agents, our findings indicate that cooperation, i.e., the degree of adjustment of individual motor output depending on that of the partner, is mediated by the interconnected subdivisions of the right TPJ.
Type: article
Appears in Collections:教育学院・教育学研究院 (Graduate School of Education / Faculty of Education) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 阿部 匡樹

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