Abstract #5284

The Synchronization of Brain Activity in Real-Time Human Interaction Revealed by fMRI Hyperscanning

Jacky Tai-Yu Lu¹, Claire Hui-Chuan Chang², Shu-Yu Huang¹, Wen-Jui Kuo³, and Fa-Hsuan Lin^4,5

¹Graduate Institute of Biomedical Electronics and Bioinformatics, National Taiwan University, Taipei, Taiwan, ²College of Humanities and Social Sciences, Taipei Medical University, Taipei, Taiwan, ³Institute of Neuroscience, National Yang-Ming University, Taipei, Taiwan, ⁴Institute of Biomedical Engineering, National Taiwan University, Taipei, Taiwan, ⁵Department of Neuroscience and Biomedical Engineering, Aalto University, Espoo, Finland

This study used functional magnetic resonance imaging (fMRI) hyperscanning to estimate the synchronization of human brain activations in interpersonal interaction by inter-subject correlation (ISC) analysis. Brain activations of pairs of subjects were recorded simultaneously during real-time video tennis game under cooperation, competition, and a control condition involving no interaction. Compared to control condition, higher ISC was found in premotor area (BA6) and right precuneus in the two game conditions. The finding of premotor area suggests that mutual action understanding was supported by the mirror neuron system during interpersonal interaction.

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