Taking two to tango: fMRI analysis of improvised joint action with physical contact
Taking two to tango: fMRI analysis of improvised joint action with physical contact
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DOI：
10.1371/journal.pone.0191098
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发表时间：
2018-01-11
期刊：
影响因子：
3.7
通讯作者：
Brown, Steven
中科院分区：
文献类型：
--
作者：
Chauvigne, Lea A. S.;Belyk, Michel;Brown, Steven
许多形式的联合行动涉及参与者之间的物理耦合，例如一起移动沙发或跳探戈。我们报告了一项新颖的两人功能性磁共振成像研究的结果，在这项研究中，受过训练的夫妇舞者与站在磁铁孔旁边的实验者进行双手接触，并且两人在领导者和追随者之间交替进行联合即兴运动。领导行为表现出一种自我定向的一般模式，与涉及运动规划、导航、排序、动作监控和纠错的大脑区域有关。相比之下，跟随显示出一种更感官的、外部导向的模式，揭示了涉及躯体感觉、本体感觉、运动跟踪、社会认知和结果监测的区域。我们还让参与者执行一个“相互”条件，其中运动模式是预先学习的，角色是对称的，从而最大限度地减少了任何领导或跟随的倾向。相互条件下，与领导或跟随相比，参与心智化和社会奖励的大脑区域活动更大。最后，对即兴表演的分析揭示了运动规划区和工作记忆区的双重重要性。我们讨论这些结果的理论，联合行动和即兴。
Many forms of joint action involve physical coupling between the participants, such as when moving a sofa together or dancing a tango. We report the results of a novel two-person functional MRI study in which trained couple dancers engaged in bimanual contact with an experimenter standing next to the bore of the magnet, and in which the two alternated between being the leader and the follower of joint improvised movements. Leading showed a general pattern of self-orientation, being associated with brain areas involved in motor planning, navigation, sequencing, action monitoring, and error correction. In contrast, following showed a far more sensory, externally-oriented pattern, revealing areas involved in somatosensation, proprioception, motion tracking, social cognition, and outcome monitoring. We also had participants perform a "mutual" condition in which the movement patterns were pre-learned and the roles were symmetric, thereby minimizing any tendency toward either leading or following. The mutual condition showed greater activity in brain areas involved in mentalizing and social reward than did leading or following. Finally, the analysis of improvisation revealed the dual importance of motor-planning and working-memory areas. We discuss these results in terms of theories of both joint action and improvisation.