Cognitive neuroscienceWhen a rubber hand ‘feels’ what the real hand cannotRorden, Chris1,2,3; Heutink, Joost1; Greenfield, Eve1; Robertson, Ian H.1Author Information 1MRC Cognition and Brain Sciences Unit, 15 Chaucer Road, Cambridge CB2 2EF 2Institute of Cognitive Neuroscience, 17 Queen Square, London WC1N 3RH, UK 3Corresponding Author and Address: Chris Rorden, MRC Cognition and Brain Sciences Unit, 15 Chaucer Road, Cambridge CB2 2EF ACKNOWLEDGEMENTS: This research was supported by the Wellcome Trust. Received 30 September 1998; accepted 23 October 1998 NeuroReport: January 18, 1999 - Volume 10 - Issue 1 - p 135-138 Buy Abstract WE examined a patient who was clinically much better at reporting tactile stimulation when he could see his stimulated hand. Experimentally, we found that he had difficulty detecting taps accompanied by a salient (but not predictive) light located directly above his concealed hand. However, his performance was dramatically improved if the light was attached to a rubber hand situated in line with the patient's hidden hand. Previous studies have suggested that tactile sensitivity can be improved by nearby visual stimulation. However, our effect shows that crossmodal sensory facilitation does not only depend upon simple spatial proximity alone. Rather, a simultaneous visual event dramatically improves perception of touch specifically when it is attributed to the perceiver's stimulated limb. © 1999 Lippincott Williams & Wilkins, Inc.