Institute of Cognitive Neuroscience and Psychology, Research Centre for Natural Sciences, Budapest, Hungary; Budapest University of Technology and Economics, Budapest, Hungary; Pázmány Péter Catholic University, Budapest, Hungary.
Institute of Cognitive Neuroscience and Psychology, Research Centre for Natural Sciences, Budapest, Hungary; Károli Gáspár University of the Reformed Church in Hungary, Hungary.
Biol Psychol. 2021 Apr;161:108029. doi: 10.1016/j.biopsycho.2021.108029. Epub 2021 Feb 5.
Event-related potentials (ERPs) elicited by self-induced sounds are often smaller than ERPs elicited by identical, but externally generated sounds. This action-related auditory ERP attenuation is more pronounced when self-induced sounds are intermixed with similar sounds generated by an external source. The current study explored whether attentional factors contributed to this phenomenon. Participants performed tone-eliciting actions, while the action-tone contingency and the set of additional action effects (tactile only, tactile and visual) were manipulated in a blocked manner. Previous action-tone contingence-effects were replicated, but the addition of other sensory action consequences did not influence the magnitude of auditory ERP attenuation. This suggests that the amount of attention allocated to concurrent non-auditory action effects does not substantially affect the magnitude of action-related auditory ERP attenuation and is on a par with the assumption that action-related auditory ERP attenuation might be related to the process of distinguishing self-induced stimuli from externally generated ones.
由自我引发的声音引起的事件相关电位（ERPs）通常比由相同但外部产生的声音引起的 ERPs 小。当自我引发的声音与外部来源产生的类似声音混合时，这种与动作相关的听觉 ERP 衰减更为明显。本研究探讨了注意力因素是否对此现象有贡献。参与者执行引发声音的动作，同时以块的方式操纵动作-声音的关联和附加动作效果的集合（仅触觉、触觉和视觉）。先前的动作-声音关联效应得到了复制，但其他感官动作效果的添加并没有影响听觉 ERP 衰减的幅度。这表明，分配给并发非听觉动作效果的注意力量不会显著影响与动作相关的听觉 ERP 衰减的幅度，这与假设一致，即与动作相关的听觉 ERP 衰减可能与区分自我引发的刺激与外部产生的刺激的过程有关。
