PDF(Pubmed)
Abstract：
Understanding and predicting others\' actions in ecological settings is an important research goal in social neuroscience. Here, we deployed a mobile brain-body imaging (MoBI) methodology to analyze inter-brain communication between professional musicians during a live jazz performance. Specifically, bispectral analysis was conducted to assess the synchronization of scalp electroencephalographic (EEG) signals from three expert musicians during a three-part 45 minute jazz performance, during which a new musician joined every five minutes. The bispectrum was estimated for all musician dyads, electrode combinations, and five frequency bands. The results showed higher bispectrum in the beta and gamma frequency bands (13-50 Hz) when more musicians performed together, and when they played a musical phrase synchronously. Positive bispectrum amplitude changes were found approximately three seconds prior to the identified synchronized performance events suggesting preparatory cortical activity predictive of concerted behavioral action. Moreover, a higher amount of synchronized EEG activity, across electrode regions, was observed as more musicians performed, with inter-brain synchronization between the temporal, parietal, and occipital regions the most frequent. Increased synchrony between the musicians\' brain activity reflects shared multi-sensory processing and movement intention in a musical improvisation task.
摘要：
理解和预测他人在生态环境中的行为是社会神经科学的重要研究目标。这里,我们部署了一种移动脑体成像（MoBI）方法来分析现场爵士乐表演期间专业音乐家之间的大脑交流。具体来说,在三部分45分钟的爵士乐表演中，进行了双谱分析，以评估三位专家音乐家的头皮脑电图（EEG）信号的同步。在此期间，每五分钟就有一位新音乐家加入。估计所有音乐家的双谱，电极组合，五个频段。结果表明，当更多的音乐家一起表演时，在β和γ频带（13-50Hz）中的双谱较高，当他们同步演奏乐句时。在确定的同步性能事件之前大约三秒发现了正的双谱振幅变化，这表明预备皮层活动可以预测一致的行为动作。此外，更多的同步脑电图活动，跨电极区域，随着更多音乐家的表演，大脑之间的时间同步，顶叶,和枕骨区域最常见。音乐家大脑活动之间的同步性增加反映了音乐即兴创作任务中共享的多感官处理和运动意图。
