Markiewicz Roksana, Segaert Katrien, Mazaheri Ali
School of Psychology, University of Birmingham, Birmingham, UK.
Centre for Human Brain Health, University of Birmingham, Birmingham, UK.
iScience. 2024 Aug 23;27(9):110802. doi: 10.1016/j.isci.2024.110802. eCollection 2024 Sep 20.
In this study, we investigated whether brain-to-brain coupling patterns could predict performance in a time-estimation task that requires two players to cooperate. The participant pairs were tasked with synchronizing button presses after converging on a shared representation of "short," "medium," and "long" time intervals while utilizing feedback to adjust responses. We employed electroencephalogram (EEG)-hyperscanning and focused on post-feedback brain activity. We found that negative feedback led to increased frontal mid-line theta activity across individuals. Moreover, a correlation in post-feedback theta power between players forecasted failed joint action, while an anti-correlation forecasted success. These findings suggest that temporally coupled feedback-related brain activity between two individuals serves as an indicator of redundancy in adjustment of a common goal representation. Additionally, the anti-correlation of this activity reflects cognitive strategic mechanisms that ensure optimal joint action outcomes. Rather than a , successful cooperation requires from both partners.
在本研究中，我们调查了脑对脑耦合模式是否能够预测一项需要两名参与者合作的时间估计任务中的表现。参与者配对的任务是在就“短”、“中”和“长”时间间隔的共享表征达成一致后同步按键，同时利用反馈来调整反应。我们采用了脑电图（EEG）超扫描技术，并专注于反馈后的大脑活动。我们发现，负面反馈会导致个体间额中线θ活动增加。此外，玩家之间反馈后θ功率的相关性预示着联合行动失败，而反相关性则预示着成功。这些发现表明，两个人之间时间上耦合的反馈相关大脑活动可作为共同目标表征调整中冗余度的一个指标。此外，这种活动的反相关性反映了确保最佳联合行动结果的认知战略机制。成功的合作并非一方单方面的行为，而是需要双方共同努力。
