Balconi Michela, Vanutelli Maria E
Research Unit in Affective and Social Neuroscience, Department of Psychology, Catholic University of MilanMilan, Italy.
Front Behav Neurosci. 2017 Aug 31;11:163. doi: 10.3389/fnbeh.2017.00163. eCollection 2017.
Hyperscanning brain paradigm was applied to competitive task for couples of subjects. Functional Near-Infrared Spectroscopy (fNIRS) and cognitive performance were considered to test inter-brain and cognitive strategy similarities between subjects (14 couples) during a joint-action. We supposed increased brain-to-brain coupling and improved cognitive outcomes due to joint-action and the competition. As supposed, the direct interaction between the subjects and the observed external feedback of their performance (an experimentally induced fictitious feedback) affected the cognitive performance with decreased Error Rates (ERs), and Response Times (RTs). In addition, fNIRS measure (oxyhemoglobin, O2Hb) revealed an increased brain activity in the prefrontal cortex (PFC) in post-feedback more than pre-feedback condition. Moreover, a higher inter-brain similarity was found for the couples during the task, with higher matched brain response in post-feedback condition than pre-feedback. Finally, a significant increased prefrontal brain lateralization effect was observed for the right hemisphere. Indeed the right PFC was more responsive with similar modalities within the couple during the post-feedback condition. The joined-task and competitive context was adduced to explain these cognitive performance improving, synergic brain responsiveness within the couples and lateralization effects (negative emotions).
超扫描脑范式被应用于受试者对的竞争任务中。功能性近红外光谱（fNIRS）和认知表现被用于测试14对受试者在联合行动期间脑间和认知策略的相似性。我们推测，由于联合行动和竞争，脑间耦合增加，认知结果得到改善。正如所推测的那样，受试者之间的直接互动以及他们表现的观察到的外部反馈（实验诱导的虚拟反馈）影响了认知表现，错误率（ERs）和反应时间（RTs）降低。此外，fNIRS测量（氧合血红蛋白，O2Hb）显示，反馈后前额叶皮层（PFC）的脑活动比反馈前增加。此外，在任务期间，发现夫妻之间的脑间相似性更高，反馈后条件下的脑反应匹配度高于反馈前。最后，观察到右半球前额叶脑侧化效应显著增加。事实上，在反馈后条件下，右PFC在夫妻中对相似模式的反应更强烈。联合任务和竞争背景被用来解释这些认知表现的改善、夫妻间协同的脑反应以及侧化效应（负面情绪）。
