The interaction between felt touch and tactile consequences of observed actions: an action-based somatosensory congruency paradigm
The interaction between felt touch and tactile consequences of observed actions: an action-based somatosensory congruency paradigm
复制标题
DOI：
10.1093/scan/nsv081
复制
发表时间：
2016-07-01
影响因子：
4.2
通讯作者：
Brass, Marcel
中科院分区：
文献类型：
--
作者：
Deschrijver, Eliane;Wiersema, Jan R.;Brass, Marcel
动作观察导致在观察者的大脑中对观察到的动作的运动方面（运动模拟）及其体感后果（基于动作的体感模拟）的表示。在当前的脑电图研究中，我们研究了基于动作的体感模拟和感觉触摸的神经元相互作用。我们提出了食指或中指轻敲人类或木制的手的运动，而同时呈现“自来水样”的触觉，无论是相应的或不相应的指尖的参与者。我们专注于体感处理的早期阶段[P50，N100和N140感觉诱发电位（SEP）]和高阶处理的后期阶段（P3复合）。结果表明，在P50早期SEP中存在生命性和一致性的交互作用，在N100/N140 SEP中存在生命性效应。在P3复合体中，我们发现了一个相互作用的影响，表明一致性的影响是在人类比在木制的手。我们认为，P3复合体可能反映了高阶自我-他人的区别，通过信号模拟基于动作的触摸，不匹配自己的触觉信息。因此，基于动作的躯体感觉一致性范式可能有助于从躯体感觉的角度理解高阶社会过程。
Action observation leads to a representation of both the motor aspect of an observed action (motor simulation) and its somatosensory consequences (action-based somatosensory simulation) in the observer's brain. In the current electroencephalography-study, we investigated the neuronal interplay of action-based somatosensory simulation and felt touch. We presented index or middle finger tapping movements of a human or a wooden hand, while simultaneously presenting 'tap-like' tactile sensations to either the corresponding or non-corresponding fingertip of the participant. We focused on an early stage of somatosensory processing [P50, N100 and N140 sensory evoked potentials (SEPs)] and on a later stage of higher-order processing (P3-complex). The results revealed an interaction effect of animacy and congruency in the early P50 SEP and an animacy effect in the N100/N140 SEPs. In the P3-complex, we found an interaction effect indicating that the influence of congruency was larger in the human than in the wooden hand. We argue that the P3-complex may reflect higher-order self-other distinction by signaling simulated action-based touch that does not match own tactile information. As such, the action-based somatosensory congruency paradigm might help understand higher-order social processes from a somatosensory point of view.