a School of Psychology, University of Nottingham , Nottingham , UK.
Cogn Neurosci. 2011 Sep-Dec;2(3-4):179-85. doi: 10.1080/17588928.2011.565120. Epub 2011 Mar 28.
The brain is able to sustain multiple bodily representations, and it is still unclear whether real body parts can be disembodied during the embodiment of fake or illusory body parts. The current experiment attempted to disembody the real hand without the visuoproprioceptive mismatch thought to compromise disembodiment in the rubber hand illusion by providing asynchronous feedback of the hand viewed in its actual location. Participants disowned their real hand and claimed ownership of a synchronous fake hand as measured by ownership questionnaires and skin conductance responses to perceived threat. In contrast, the body schema, as indexed by manual pointing, was only mildly affected, further supporting the distinction between bodily representations. Conflicts in time were more disruptive than conflicts in space for body ownership, while the effect was less so for body schema, schema being more affected by the proximity of vision and proprioception.
大脑能够维持多种身体表象，目前尚不清楚在体现虚假或虚幻身体部位时，真实的身体部位是否可以脱离身体。当前实验试图在不产生与橡胶手错觉中身体脱离相关的视动错觉的情况下，通过对手在实际位置的视觉反馈提供异步反馈来使真实的手脱离身体。通过所有权问卷和对感知威胁的皮肤电反应来测量，参与者否认了他们的真实的手，并声称拥有同步的虚假的手。相比之下，作为身体图式索引的手动指向，仅受到轻微影响，这进一步支持了身体表象之间的区别。时间冲突比对身体所有权的空间冲突更具破坏性，而对身体图式的影响则较小，因为视觉和本体感觉的接近度对图式的影响更大。
