Hudac Caitlin M
a Department of Psychiatry and Behavioral Sciences , University of Washington , Seattle , WA , USA.
b Center on Human Development and Disability , University of Washington , Seattle , WA , USA.
Soc Neurosci. 2019 Jun;14(3):313-327. doi: 10.1080/17470919.2018.1463926. Epub 2018 Apr 16.
The present study sought to evaluate whether social priming modulates neural responses to ostracism, such that making arbitrary interpersonal decisions increases the experience of social exclusion more than making arbitrary physical decisions. This exploratory event-related potential (ERP) study utilized the Lunchroom task, in which adults (N = 28) first selected one of two options that included either interpersonal or physical descriptors. Participants then received ostracism outcome feedback within a lunchroom scenario in which they were either excluded (e.g. sitting alone) or included (e.g. surrounded by others). While the N2 component was sensitive to priming decision condition, only the P3 component discriminated between ostracism decisions. Further inspection of the neural sources indicated that the amygdala, anterior cingulate cortex, and superior temporal gyrus were more engaged for exclusion than inclusion conditions during both N2 and P3 temporal windows. Evaluation of temporal source dynamics suggest that the effects of ostracism are predominant between 250-500 ms and were larger following interpersonal than physical decisions. These results suggest that being ostracized evokes a larger neural response that is modulated following priming of the social brain.
本研究旨在评估社会启动是否会调节对排斥的神经反应，即做出任意人际决策比做出任意物理决策会增加社会排斥体验。这项探索性事件相关电位（ERP）研究采用了午餐室任务，其中成年人（N = 28）首先从两个选项中选择一个，选项包括人际描述或物理描述。参与者随后在午餐室场景中收到排斥结果反馈，在该场景中他们要么被排斥（例如独自坐着）要么被接纳（例如被他人包围）。虽然N2成分对启动决策条件敏感，但只有P3成分能区分排斥决策。对神经源的进一步检查表明，在N2和P3时间窗口期间，杏仁核、前扣带回皮质和颞上回在排斥条件下比接纳条件下参与度更高。对时间源动态的评估表明，排斥效应在250 - 500毫秒之间占主导，且人际决策后的效应大于物理决策后的效应。这些结果表明，被排斥会引发更大的神经反应，这种反应在社会脑启动后会受到调节。
