Sugimoto Fumie, Kimura Motohiro, Takeda Yuji
Human-Centered Mobility Research Center, National Institute of Advanced Industrial Science and Technology (AIST), Japan.
Human-Centered Mobility Research Center, National Institute of Advanced Industrial Science and Technology (AIST), Japan.
Biol Psychol. 2021 Nov;166:108201. doi: 10.1016/j.biopsycho.2021.108201. Epub 2021 Oct 13.
Event-related potentials elicited by tones generated by one's own discrete actions (e.g., button presses) are attenuated compared to those elicited by tones generated externally. The present study investigated whether ERP attenuation would occur when the timing or pitch of tones is modulated by continuous actions, as for such actions, a weak association between actions and their auditory consequences is assumed. In a modulation condition, participants modulated the time interval between tones (Experiment 1) or the pitch of tones (Experiment 2) by turning a steering wheel. In a listening condition, participants listened to the same tones as in the modulation condition without any action. The results revealed that the amplitude of N2 elicited by tones decreased in the modulation compared to listening conditions, consistently in the two experiments, suggesting relatively higher-order auditory processing can be mainly influenced by the prediction of action consequences when continuous actions modulate features of auditory stimuli.
与个体离散动作（如按键）所产生的音调诱发的事件相关电位相比，由外部产生的音调诱发的事件相关电位会减弱。本研究调查了当音调的时间或音高由连续动作调制时，是否会出现事件相关电位减弱的情况，因为对于此类动作，动作与其听觉后果之间的关联较弱。在调制条件下，参与者通过转动方向盘来调制音调之间的时间间隔（实验1）或音调的音高（实验2）。在聆听条件下，参与者聆听与调制条件下相同的音调，但不进行任何动作。结果显示，与聆听条件相比，在调制条件下音调诱发的N2波幅降低，这在两个实验中均一致，表明当连续动作调制听觉刺激的特征时，相对高阶的听觉处理主要受动作后果预测的影响。
