School of Engineering and Sciences, Mechatronics Department, Tecnologico de Monterrey, Monterrey, Nuevo Leon, 64849, Mexico.
Noninvasive Brain-Machine Interface Systems Laboratory, NSF IUCRC BRAIN, University of Houston, Houston, Texas, 77004, USA.
F1000Res. 2023 Nov 3;11:989. doi: 10.12688/f1000research.123515.3. eCollection 2022.
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.
理解和预测生态环境下他人的行为是社会神经科学的一个重要研究目标。在这里，我们采用移动脑-体成像（MoBI）方法来分析现场爵士乐表演中专业音乐家之间的大脑间通讯。具体来说，我们进行了双谱分析，以评估三位专家音乐家在 45 分钟的爵士乐表演的三个部分中的头皮脑电图（EEG）信号的同步情况，在此期间，每五分钟就会有一位新音乐家加入。双谱估计了所有音乐家对、电极组合和五个频带的情况。结果表明，当更多的音乐家一起演奏时，以及当他们同步演奏一段音乐时，β和γ频段（13-50Hz）的双谱更高。在确定的同步演奏事件之前约三秒钟发现了正双谱幅度变化，这表明存在对协同行为的皮质活动的预测。此外，随着音乐家数量的增加，观察到跨电极区域的 EEG 活动同步性更高，颞叶、顶叶和枕叶区域之间的大脑间同步性最频繁。音乐家大脑活动之间的同步性增加反映了在音乐即兴创作任务中共享的多感觉处理和运动意图。
