Balconi Michela, Fronda Giulia
International Research Center for Cognitive Applied Neuroscience (IrcCAN), Catholic University of the Sacred Heart, 20122 Milan, Italy.
Research Unit in Affective and Social Neuroscience, Department of Psychology, Catholic University of the Sacred Heart, 20122 Milan, Italy.
Brain Sci. 2021 Apr 29;11(5):577. doi: 10.3390/brainsci11050577.
Recently, the neurosciences have become interested in the investigation of neural responses associated with the use of gestures. This study focuses on the relationship between the intra-brain and inter-brain connectivity mechanisms underlying the execution of different categories of gestures (positive and negative affective, social, and informative) characterizing non-verbal interactions between thirteen couples of subjects, each composed of an encoder and a decoder. The study results underline a similar modulation of intra- and inter-brain connectivity for alpha, delta, and theta frequency bands in specific areas (frontal or posterior regions) depending on the type of gesture. Moreover, taking into account the gestures' valence (positive or negative), a similar modulation of intra- and inter-brain connectivity in the left and right sides was observed. This study showed congruence in the intra-brain and inter-brain connectivity trend during the execution of different gestures, underlining how non-verbal exchanges might be characterized by intra-brain phase alignment and implicit mechanisms of mirroring and synchronization between the two individuals involved in the social exchange.
最近，神经科学领域开始关注与手势使用相关的神经反应研究。本研究聚焦于脑内和脑间连接机制之间的关系，这些机制是执行不同类别手势（积极和消极情感、社交和信息性）的基础，这些手势刻画了13对受试者之间的非语言互动，每对受试者由一个编码者和一个解码者组成。研究结果强调，根据手势类型，特定区域（额叶或后部区域）的α、δ和θ频段的脑内和脑间连接存在类似的调制。此外，考虑到手势的效价（积极或消极），在左右两侧观察到脑内和脑间连接的类似调制。这项研究表明，在执行不同手势时，脑内和脑间连接趋势具有一致性，强调了非语言交流可能具有脑内相位对齐以及社交交流中涉及的两个人之间镜像和同步的隐性机制的特征。
