a School of Psychology and Sackler Centre for Consciousness Science, University of Sussex , Falmer , Brighton , UK.
Cogn Neurosci. 2011 Sep-Dec;2(3-4):171-8. doi: 10.1080/17588928.2011.603828. Epub 2011 Sep 19.
The rubber hand illusion is one reliable way to experimentally manipulate the experience of body ownership. However, debate continues about the necessary and sufficient conditions eliciting the illusion. We measured proprioceptive drift and the subjective experience (via questionnaire) while manipulating two variables that have been suggested to affect the intensity of the illusion. First, the rubber hand was positioned either in a posturally congruent position, or rotated by 180°. Second, either the anatomically same rubber hand was used, or an anatomically incongruent one. We found in two independent experiments that a rubber hand rotated by 180° leads to increased proprioceptive drift during synchronous visuo-tactile stroking, although it does not lead to feelings of ownership (as measured by questionnaire). This dissociation between drift and ownership suggests that proprioceptive drift is not necessarily a valid proxy for the illusion when using hands rotated by 180°.
橡胶手错觉是一种可靠的实验方法，可以用来操纵身体所有权的体验。然而，关于引发错觉的必要和充分条件，仍存在争议。我们在操纵两个被认为会影响错觉强度的变量时，测量了本体感觉漂移和主观体验（通过问卷调查）。首先，橡胶手的位置要么与姿势一致，要么旋转 180°。其次，要么使用解剖相同的橡胶手，要么使用解剖不同的橡胶手。我们在两个独立的实验中发现，在同步视触觉刺激时，旋转 180°的橡胶手会导致本体感觉漂移增加，尽管它不会导致所有权的感觉（通过问卷调查测量）。这种漂移和所有权之间的分离表明，当使用旋转 180°的手时，本体感觉漂移不一定是错觉的有效替代物。
