Psychologically induced cooling of a specific body part caused by the illusory ownership of an artificial counterpart
Psychologically induced cooling of a specific body part caused by the illusory ownership of an artificial counterpart
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DOI：
10.1073/pnas.0803768105
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发表时间：
2008-09-02
影响因子：
11.1
通讯作者：
Spence, Charles
中科院分区：
文献类型：
--
作者：
Moseley, G. Lorimer;Olthof, Nick;Spence, Charles
身体所有权感代表了我们自我意识的一个基本方面，但在许多神经、精神和心理疾病中被破坏，这些疾病的特征也是皮肤温度调节的破坏，有时是在单肢中。我们假设，特定肢体的皮肤温度可以通过心理上扰乱该肢体的所有权感而被扰乱。在六个独立的实验中，并通过使用一个既定的协议，以诱导橡胶手的错觉，我们表明，皮肤温度的真实的手下降时，我们采取的所有权的人造对手。皮肤温度的降低是肢体特异性的：它不会发生在未受刺激的手上，也不会发生在同侧的脚上。这种效应不是由触觉或视觉输入本身引起的，也不是由同时的触觉和视觉输入本身引起的，也不是由注意力向实验侧或肢体的转移引起的。事实上，拥有假手会减缓对来自真实的手的信息的触觉处理，这在中风后身体失去所有权的患者中也可以观察到。这些心理诱导的肢体特异性温度调节中断的发现提供了第一个证据：获得人造身体部位的所有权会对真实的身体部位产生影响;我们对身体自我的认识和自我的生理调节以自上而下的方式密切相关;而破坏身体所有权感的认知过程反过来又会破坏许多具有这两种特征的状态下的体温调节。
The sense of body ownership represents a fundamental aspect of our self-awareness, but is disrupted in many neurological, psychiatric, and psychological conditions that are also characterized by disruption of skin temperature regulation, sometimes in a single limb. We hypothesized that skin temperature in a specific limb could be disrupted by psychologically disrupting the sense of ownership of that limb. In six separate experiments, and by using an established protocol to induce the rubber hand illusion, we demonstrate that skin temperature of the real hand decreases when we take ownership of an artificial counterpart. The decrease in skin temperature is limb-specific: it does not occur in the unstimulated hand, nor in the ipsilateral foot. The effect is not evoked by tactile or visual input per se, nor by simultaneous tactile and visual input per se, nor by a shift in attention toward the experimental side or limb. In fact, taking ownership of an artificial hand slows tactile processing of information from the real hand, which is also observed in patients who demonstrate body disownership after stroke. These findings of psychologically induced limb-specific disruption of temperature regulation provide the first evidence that: taking ownership of an artificial body part has consequences for the real body part; that the awareness of our physical self and the physiological regulation of self are closely linked in a top-down manner; and that cognitive processes that disrupt the sense of body ownership may in turn disrupt temperature regulation in numerous states characterized by both.