The size-weight illusion induced through human echolocation.
Association for Psychological Science / SAGE Publications
© The Author(s) 2014
Certain blind individuals have learned to interpret the echoes of self-generated sounds to perceive the structure of objects in their environment. The current work examined how far the influence of this unique form of sensory substitution extends by testing whether echolocation-induced representations of object size could influence weight perception. A small group of echolocation experts made tongue clicks or finger snaps toward cubes of varying sizes and weights before lifting them. These echolocators experienced a robust size-weight illusion. This experiment provides the first demonstration of a sensory substitution technique whereby the substituted sense influences the conscious perception through an intact sense.
G. Buckingham was supported by a Banting Postdoctoral Fellowship from the Natural Sciences and Engineering Research Council of Canada
Research Support, Non-U.S. Gov't
Pre-print version of article published at https://dx.doi.org/10.1177/0956797614561267
Vol. 26, No. 2, pp. 237-242
Place of publication