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Visual enhancement of touch in spatial body representation

Press, Clare and Taylor-Clarke, Marisa and Kennett, Steffan and Haggard, Patrick (2004) 'Visual enhancement of touch in spatial body representation.' Experimental Brain Research, 154 (2). pp. 238-245. ISSN 0014-4819

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Perception of our own bodies is based on integration of visual and tactile inputs, notably by neurons in the brain's parietal lobes. Here we report a behavioural consequence of this integration process. Simply viewing the arm can speed up reactions to an invisible tactile stimulus on the arm. We observed this visual enhancement effect only when a tactile task required spatial computation within a topographic map of the body surface and the judgements made were close to the limits of performance. This effect of viewing the body surface was absent or reversed in tasks that either did not require a spatial computation or in which judgements were well above performance limits. We consider possible mechanisms by which vision may influence tactile processing.

Item Type: Article
Uncontrolled Keywords: somatosensory cortex; cross-modal; somatotopic; touch; body representation
Subjects: B Philosophy. Psychology. Religion > BF Psychology
Divisions: Faculty of Science and Health
Faculty of Science and Health > Psychology, Department of
SWORD Depositor: Elements
Depositing User: Elements
Date Deposited: 13 Feb 2015 20:54
Last Modified: 18 Aug 2022 10:54

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