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Dynamics in interbrain synchronization while playing a piano duet
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DOI：10.1111/nyas.15072.png)
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Abstract
En 中文
Humans interact with each other through actions that are implemented by sensory and motor processes. To investigate the role of interbrain synchronization emerging during interpersonal action coordination, electroencephalography data from 13 pairs of pianists were recorded simultaneously while they performed a duet together. The study aimed to investigate whether interbrain phase couplings can be reduced to similar bottom-up driven processes during synchronous play, or rather represent cognitive top-down control required during periods of higher coordination demands. To induce such periods, one of the musicians acted as a confederate who deliberately desynchronized the play. As intended, on the behavioral level, the perturbation caused a breakdown in the synchronization of the musicians' play and in its stability across trials. On the brain level, interbrain synchrony, as measured by the interbrain phase coherence (IPC), increased in the delta and theta frequency bands during perturbation as compared to non-perturbed trials. Interestingly, this increase in IPC in the delta band was accompanied by the shift of the phase difference angle from in-phase toward anti-phase synchrony. In conclusion, the current study demonstrates that interbrain synchronization is based on the interpersonal temporal alignment of different brain mechanisms and is not simply reducible to similar sensory or motor responses. Humans interact with each other through actions that are implemented by sensory and motor processes. This electroencephalography hyperscanning study on pianist duos aimed to investigate changes in interbrain synchronization (IBS) under perturbed and non-perturbed play conditions. The results showed that IBS increased during perturbation as compared to non-perturbed trials. It demonstrates that IBS is based on the interpersonal temporal alignment and is not simply reducible to similar sensory-motor responses.image
Keywords:
EEG hyperscanning
interbrain coupling
phase alignment
phase synchronization
piano duos
social interaction
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