| dc.description.abstract | Human beings are social animals, among whom collaborative interaction in social settings is an indispensable part. Previously, research on human collaborative interactions typically focused on behavioral studies. However, the neural activities underlying these collaborative interactions have been relatively understudied. Therefore, this research aims to delve into whether there is a correlation in brain activity among participants in a dyadic collaborative task and to explore the neural activities during the experiment. In this study, we used Electroencephalogram (EEG) to record the brain activities of two participants engaged in a collaborative task within a Virtual Reality (VR) environment. In the post-analysis, we first segmented the behaviors under different collaborations by using a 1 second interval as a threshold, and then assessed the synchrony of brain activity between participants, the individual differences in brain activity of participants with different roles, and the variability under different collaborations. The results showed that, in the dyadic collaborative tasks, the participants′ brain activities exhibited a certain degree of synchrony. We found significant synchrony in the α band in the frontal, central, and parietal lobes, in the 〖 β〗_1 band in the central and parietal lobes, and variability in most regions of interest (ROI) in the right hemisphere in the〖 β〗_3 band, and in most ROIs in the 〖 β〗_2 band. Moreover, the brain activities of participants with different roles in the dyadic collaborative tasks showed different patterns of activity. Dividing the subjects into leaders and followers, we found differences in most ROIs in leaders, while in followers, differences were found across different bands. In the β_1/α band, except for the right frontal lobe, differences were found; in the β_2/α band, differences were found in all ROIs except F4 when t < 1 second, and only in C3, P3, P4 when t > 1 second; in the 〖 β〗_3/α band, only Fz and the parietal region showed differences. Overall, this study provides preliminary evidence that brain synchrony in dyadic collaborative tasks may be related to task performance. This lays the foundation for further exploration of the relationship between collaboration and brain activity, while also highlighting the need for more in-depth research to explain this complex relationship | en_US |