Spatial limits on referred touch to an alien limb may reflect boundaries of visuo-tactile peripersonal space surrounding the hand

Brain Cogn. 2007 Jun;64(1):104-9. doi: 10.1016/j.bandc.2006.09.013. Epub 2006 Nov 22.


In this study, the spatial limits of referred touch to a rubber hand were investigated. Participants rated the strength of the perceived illusion when the rubber hand was placed in one of six different spatial positions (at a distance of 17.5-67.5cm horizontal from the participant's own hand). The results revealed a significant nonlinear relationship in the strength of the illusion, with the strongest ratings given when the two hands were closest; decaying significantly after a distance of 30cm. The time taken to elicit the illusion followed a similar trend. These results may reflect the response properties of bimodal visuo-tactile cells encoding peripersonal space around the hand.

Publication types

  • Randomized Controlled Trial

MeSH terms

  • Adult
  • Female
  • Humans
  • Illusions*
  • Male
  • Personal Space*
  • Proprioception*
  • Touch*
  • Visual Perception*