Preliminary Study of Emotional Inter-Brain Synchronization

When people surf online, they share audio-visual materials and may have similar emotional reactions. We carried out this study to explore the neural mechanism of emotional inter-brain synchronization (IBS). Multilateral interaction is more practical in IBS research than the interaction between two people. We propose a novel inspection method for emotional IBS based on brain connectivity analysis and manifold measurement. The method is expected to deal with multilateral interaction IBS and the problem of heterogeneous data brought by the data collection paradigm. Specifically, the algorithm was constructed based on causal brain connectivity analysis and Riemannian metrics (SPD). Our results suggest that participants have an emotional IBS effect in the context of audio-visual material sharing. The proposed IBS method is more adept at dealing with multiple interaction IBS and effectively reduces algorithm complexity.