Department of Experimental Psychology, University of Oxford, United Kingdom.
Conscious Cogn. 2011 Sep;20(3):956-64. doi: 10.1016/j.concog.2011.03.021. Epub 2011 May 28.
A simple experimental paradigm creates the powerful illusion that one is touching one's own hand even when the two hands are separated by 15 cm. The participant uses her right hand to administer stimulation to a prosthetic hand while the Examiner provides identical stimulation to the participant's receptive left hand. Change in felt position of the receptive hand toward the prosthetic hand has previously led to the interpretation that the participant experiences self-touch at the location of the prosthetic hand, and experiences a sense of ownership of the prosthetic hand. Our results argue against this interpretation. We assessed change in felt position of the participant's receptive hand but we also assessed change in felt position of the participant's administering hand. Change in felt position of the administering hand was significantly greater than change in felt position of the receptive hand. Implications for theories of ownership are discussed.
一种简单的实验范式产生了一种强烈的错觉，即当两只手相隔 15 厘米时，人们感觉自己在触摸自己的手。参与者用右手对假肢进行刺激，而检查者则对参与者的接受手给予相同的刺激。先前的研究结果表明，接受手向假肢手的感觉位置的变化导致参与者在假肢手的位置上体验到自我触摸，并体验到对假肢手的所有权。我们的结果反对这种解释。我们评估了参与者接受手的感觉位置的变化，但我们也评估了参与者施力手的感觉位置的变化。施力手的感觉位置变化明显大于接受手的感觉位置变化。本文讨论了这些结果对所有权理论的影响。
