Université Paris Descartes, Sorbonne Paris Cité, 75006 Paris, France; CNRS (Laboratoire Psychologie de la Perception, UMR 8242), 75006 Paris, France; ENS (Institut Jean Nicod, UMR 8129), 75005 Paris, France.
Université Paris Descartes, Sorbonne Paris Cité, 75006 Paris, France; CNRS (Laboratoire Psychologie de la Perception, UMR 8242), 75006 Paris, France.
Neuropsychologia. 2019 Mar 4;125:14-22. doi: 10.1016/j.neuropsychologia.2019.01.012. Epub 2019 Jan 24.
Human event-related potentials (ERPs) have previously been observed to be attenuated for self-triggered sounds and amplified for deviant auditory stimuli. These auditory ERP modulations have been proposed to reflect internal predictions about the sensory consequences of our actions and more generally about our sensory context. The present exploratory ERP study (1) compared the processing of self-triggered tones by either intention-based or stimulus-driven actions, and (2) studied the impact of impulsivity traits on the prediction of action-effects. Our results are consistent with an early distinction, before N1, between tones triggered by intention-based actions and tones triggered by stimulus-driven actions. Moreover, we observed an enhanced N2b for deviant stimuli triggered by intention-based actions only. In addition, N2b modulations were correlated with impulsiveness scores. Altogether our results suggest that action-effect prediction is stronger in intention-based actions and impaired in impulsive participants but replication studies are needed to corroborate the reported findings.
人类事件相关电位（ERPs）先前已被观察到对自我触发的声音减弱，对异常听觉刺激增强。这些听觉 ERP 调制被认为反映了我们对行动感官后果的内部预测，更普遍地反映了我们的感官背景。本探索性 ERP 研究（1）比较了基于意图的或基于刺激的动作对自我触发音调的处理，（2）研究了冲动特质对动作效应预测的影响。我们的结果与 N1 之前的早期区分一致，即基于意图的动作触发的音调与基于刺激的动作触发的音调之间的区分。此外，我们仅观察到由基于意图的动作触发的异常刺激引起的 N2b 增强。此外，N2b 调制与冲动得分相关。总之，我们的结果表明，基于意图的动作中的动作效应预测更强，而冲动的参与者则受损，但需要复制研究来证实所报道的发现。
