Ren Qiaoyue, Marshall Amanda C, Kaiser Jakob, Schütz-Bosbach Simone
General and Experimental Psychology Unit, Department of Psychology, LMU Munich, Germany.
General and Experimental Psychology Unit, Department of Psychology, LMU Munich, Germany.
Biol Psychol. 2022 Apr;170:108323. doi: 10.1016/j.biopsycho.2022.108323. Epub 2022 Mar 25.
The present study investigated how cardiac signals influence response inhibition at both behavioral and electrophysiological levels by using participants' electrocardiogram signals to control the occurrence of events in a stop-signal task, in which the go cue was unpredictably followed by a stop signal requiring the cancellation of the prepotent response. We observed prolonged stop-signal reaction times, reduced stop-signal P3 amplitudes, and higher heartbeat evoked potential amplitudes when the stop signal was presented at cardiac systole, compared to presentation randomly within the cardiac cycle. These effects were independent of the emotional attribute of the stop signal (i.e., emotional facial expression change or non-emotional color change). Our results suggest that coupling stop signals to peripheral autonomic cardiac signals has an impeding effect on response inhibition, probably via shifting attention from exteroception to interoception. Our findings help clarify the precise impact of interoceptive signals on inhibitory control.
本研究通过利用参与者的心电图信号来控制停止信号任务中事件的发生，探讨了心脏信号如何在行为和电生理水平上影响反应抑制。在该停止信号任务中，启动信号之后会不可预测地出现一个停止信号，要求取消优势反应。与在心动周期内随机呈现停止信号相比，我们观察到当停止信号出现在心脏收缩期时，停止信号反应时间延长、停止信号P3波幅降低，以及心跳诱发电位波幅更高。这些效应与停止信号的情感属性（即情感面部表情变化或非情感颜色变化）无关。我们的结果表明，将停止信号与外周自主心脏信号耦合对反应抑制有阻碍作用，可能是通过将注意力从外感受转移到内感受。我们的发现有助于阐明内感受信号对抑制控制的确切影响。
