Pairs of participants mutually communicated (or not) biographical information to each other. By combining simultaneous eye-tracking, face-tracking and functional near-infrared spectroscopy, we examined how this mutual sharing of information modulates social signalling and brain activity. When biographical information was disclosed, participants directed more eye gaze to the face of the partner and presented more facial displays. We also found that spontaneous production and observation of facial displays was associated with activity in the left SMG and right dlPFC/IFG, respectively. Moreover, mutual information-sharing increased activity in bilateral TPJ and left dlPFC, as well as cross-brain synchrony between right TPJ and left dlPFC. This suggests that a complex long-range mechanism is recruited during information-sharing. These multimodal findings support the second-person neuroscience hypothesis, which postulates that communicative interactions activate additional neurocognitive mechanisms to those engaged in non-interactive situations. They further advance our understanding of which neurocognitive mechanisms underlie communicative interactions.

中文翻译：

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传记信息交互披露过程中的面部和神经机制

成对的参与者相互交流（或不交流）传记信息。通过结合同步眼球追踪、面部追踪和功能性近红外光谱，我们研究了这种信息的相互共享如何调节社交信号和大脑活动。当传记信息被披露时，参与者将更多的目光投向伴侣的脸，并展示更多的面部表情。我们还发现，面部显示的自发产生和观察分别与左侧 SMG 和右侧 dlPFC/IFG 的活动相关。此外，相互信息共享增加了双侧 TPJ 和左侧 dlPFC 的活动，以及右侧 TPJ 和左侧 dlPFC 之间的跨脑同步。这表明在信息共享过程中引入了一个复杂的远程机制。这些多模式发现支持第二人称神经科学假说，该假说假设交际互动会为那些参与非互动情境的人激活额外的神经认知机制。它们进一步促进了我们对哪些神经认知机制构成交际互动的理解。