Modulating vicarious tactile perception with transcranial electrical current stimulation.
Modulating vicarious tactile perception with transcranial electrical current stimulation.
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DOI：
10.1111/ejn.13699
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发表时间：
2017-10
期刊：
影响因子：
--
通讯作者：
Banissy MJ
中科院分区：
文献类型：
--
作者：
Bowling NC;Banissy MJ
我们分享他人经验的能力是社会行为的重要组成部分。其中一个被认为很重要的过程是替代感知。被动地观看触摸会激活一些与直接触摸体验相同的大脑区域网络。这种替代体验通常是隐性的，但对一些人来说，观看触摸唤起了有意识的触觉（镜像触摸联觉）。最近的研究试图通过经颅直流电刺激（tDCS）来诱导那些通常不会经历这些感觉的人的有意识的替代触摸。应用于初级体感皮层（SI）的阳极tDCS被发现在视觉触觉干扰任务中诱导类似于镜像触摸联觉的行为表现。在这里，我们进行了两个实验，试图通过检查来复制和扩展这些发现：（i）tDCS和高频经颅随机噪声刺激（tRNS）针对SI和颞顶交界处（TPJ）对替代性触觉感知的影响，（ii）任何刺激效应对人类与无生命物质的视觉接触的特定程度，以及（iii）视觉视角的影响（从自己与他人的角度看待触摸）关于替代感知。在实验1中，靶向SI的tRNS不调节替代知觉。在实验2中，tDCS针对SI，而不是TPJ，导致一些调制的替代知觉，但有重要的警告，这种效果。替代知觉的机制的影响进行了讨论。总的来说，这些发现并没有提供令人信服的证据来证明经颅电流刺激调节替代性触觉感知的潜力。
Our capacity to share the experiences of others is a critical part of social behaviour. One process thought to be important for this is vicarious perception. Passively viewing touch activates some of the same network of brain regions as the direct experience of touch. This vicarious experience is usually implicit, but for some people, viewing touch evokes conscious tactile sensations (mirror‐touch synaesthesia). Recent work has attempted to induce conscious vicarious touch in those that do not normally experience these sensations, using transcranial direct current stimulation (tDCS). Anodal tDCS applied to primary somatosensory cortex (SI) was found to induce behavioural performance akin to mirror‐touch synaesthesia on a visuotactile interference task. Here, we conducted two experiments that sought to replicate and extend these findings by examining: (i) the effects of tDCS and high‐frequency transcranial random noise stimulation (tRNS) targeted at SI and temporo‐parietal junction (TPJ) on vicarious tactile perception, (ii) the extent to which any stimulation effects were specific to viewing touch to humans vs. inanimate agents and (iii) the influence of visual perspective (viewing touch from one's own vs. another's perspective) on vicarious perception. In Experiment 1, tRNS targeted at SI did not modulate vicarious perception. In Experiment 2, tDCS targeted at SI, but not TPJ, resulted in some modulation of vicarious perception, but there were important caveats to this effect. Implications regarding mechanisms of vicarious perception are discussed. Collectively, the findings do not provide convincing evidence for the potential to modulate vicarious tactile perception with transcranial electrical current stimulation.
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