Data_Sheet_1_Brain Responses to Peer Feedback in Social Media Are Modulated by Valence in Late Adolescence.docx

Previous studies have examined the neural correlates of receiving negative feedback from peers during virtual social interaction in young people. However, there is a lack of studies applying platforms adolescents use in daily life. In the present study, 92 late-adolescent participants performed a task that involved receiving positive and negative feedback to their opinions from peers in a Facebook-like platform, while brain activity was measured using functional magnetic resonance imaging (fMRI). Peer feedback was shown to activate clusters in the ventrolateral prefrontal cortex (VLPFC), medial prefrontal cortex (MPFC), superior temporal gyrus and sulcus (STG/STS), and occipital cortex (OC). Negative feedback was related to greater activity in the VLPFC, MPFC, and anterior insula than positive feedback, replicating previous findings on peer feedback and social rejection. Real-life habits of social media use did not correlate with brain responses to negative feedback.

既往研究已针对青少年群体在虚拟社交互动中接收同伴负面反馈的神经关联展开探讨。然而，目前仍缺乏基于青少年日常使用的社交平台开展的相关研究。本研究招募92名晚期青少年被试，完成一项基于类Facebook社交平台的任务：接收同伴对自身观点给出的正面与负面反馈，同时通过功能磁共振成像（fMRI）记录其脑活动数据。结果显示，同伴反馈可激活腹外侧前额叶皮层（VLPFC）、内侧前额叶皮层（MPFC）、颞上回与颞上沟（STG/STS）以及枕叶皮层（OC）内的多个激活簇。相较于正面反馈，负面反馈可引发VLPFC、MPFC及前脑岛更强的神经活动，该结果重复验证了此前关于同伴反馈与社交排斥的研究结论。被试日常使用社交媒体的真实习惯与负面反馈引发的脑响应无显著相关性。