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The nonvisual self-touch rubber hand paradigm elicits the compelling illusion that one is touching one's own hand even though the two hands are not in contact. In four experiments, we investigated spatial limits of distance (15 cm, 30 cm, 45 cm, 60 cm) and alignment (0°, 90° anti-clockwise) on the nonvisual self-touch illusion and the well-known visual rubber hand illusion. Common procedures (synchronous and asynchronous stimulation administered for 60s with the prosthetic hand at body midline) and common assessment methods were used. Subjective experience of the illusion was assessed by agreement ratings for statements on a questionnaire and time of illusion onset. The nonvisual self-touch illusion was diminished though never abolished by distance and alignment manipulations, whereas the visual rubber hand illusion was more robust against these manipulations. We assessed proprioceptive drift, and implications of a double dissociation between subjective experience of the illusion and proprioceptive drift are discussed.

Original publication

DOI

10.1016/j.concog.2013.03.006

Type

Journal article

Journal

Conscious Cogn

Publication Date

06/2013

Volume

22

Pages

613 - 636

Keywords

Adolescent, Adult, Body Image, Female, Humans, Illusions, Male, Physical Stimulation, Proprioception, Surveys and Questionnaires, Touch Perception, Visual Perception, Young Adult