Judah Matt R, Shurkova Ekaterina Y, Hager Nathan M, White Evan J, Taylor Danielle L, Grant DeMond M
Old Dominion University, Norfolk, VA, United States; Virginia Consortium Program in Clinical Psychology, Norfolk, VA, United States.
Old Dominion University, Norfolk, VA, United States.
Biol Psychol. 2018 Nov;139:1-7. doi: 10.1016/j.biopsycho.2018.09.013. Epub 2018 Oct 2.
Past research suggests that social anxiety is associated with increased processing of cardiac activity. Cognitive theories propose that this is one aspect of self-focus, which is driven by concerns that features of the self, such as anxiety symptoms, will elicit evaluation from others. We investigated the relationship of social anxiety to the cortical processing of heartbeats as reflected in the heartbeat evoked potential (HEP) during false feedback of accelerated heart rate. Thirty-eight participants with high social anxiety (HSA; n = 19) and non-elevated social anxiety (NSA; n = 19) completed a cognitive task during which false feedback of accelerated heart rate was randomly provided on 50% of trials. HEP amplitude was larger in HSAs, but not NSAs, during false heartbeat acceleration cues compared to standard cues. HEP amplitude also was larger in HSAs compared to NSAs during acceleration cues. HEP amplitude during acceleration cues, but not standard cues correlated with social anxiety. Within the first second after the R-peak, social anxiety correlated with voltage at Fz from 223 to 305 ms. Social concerns about the consequences of anxiety symptoms accounted for an indirect relationship between social anxiety and the HEP. These data extend prior evidence of increased processing of cardiac activity in socially anxious individuals, providing support for cognitive theories.
过去的研究表明，社交焦虑与对心脏活动的更多加工有关。认知理论提出，这是自我关注的一个方面，它由对自我特征（如焦虑症状）会引发他人评价的担忧所驱动。我们研究了社交焦虑与在心率加速的虚假反馈期间心跳诱发电位（HEP）所反映的心跳皮层加工之间的关系。38名社交焦虑水平高（HSA；n = 19）和社交焦虑未升高（NSA；n = 19）的参与者完成了一项认知任务，在此期间，50%的试验中会随机提供心率加速的虚假反馈。与标准提示相比，在虚假心跳加速提示期间，HSA组的HEP波幅更大，但NSA组并非如此。在加速提示期间，HSA组的HEP波幅也比NSA组更大。加速提示期间而非标准提示期间的HEP波幅与社交焦虑相关。在R波峰后的第一秒内，社交焦虑与223至305毫秒时Fz点的电压相关。对焦虑症状后果的社交担忧解释了社交焦虑与HEP之间的间接关系。这些数据扩展了先前关于社交焦虑个体对心脏活动加工增加的证据，为认知理论提供了支持。
