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Sensorimotor Foundations of Higher
Cognition$
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Patrick Haggard

Print publication date: 1993

Print ISBN-13: 9780199231447

Published to Oxford Scholarship Online: March 2012

DOI: 10.1093/acprof:oso/9780199231447.001.0001

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Predictive attenuation in the perception of touch

Predictive attenuation in the perception of touch

Chapter:
(p.339) 16 Predictive attenuation in the perception of touch
Source:
Sensorimotor Foundations of Higher Cognition
Author(s):

Paul M. Bays

Daniel M. Wolpert

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780199231447.003.0016

This chapter reviews the evidence for a general process of sensory filtering that attenuates self-generated tactile sensation. It shows that tactile attenuation specifically affects self-generated sensory input and leaves externally generated sensations in the same part of the body unchanged. The findings of the review reveal that the level of attenuation can be reduced by introducing a spatial separation between the active effector and the body part in which the touch is felt, which suggests that tactile attenuation is modulated by the degree to which the context of the action is consistent with self-generation.

Keywords:   touch, sensory filtering, sensory input, active effector, action, self-generation

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