Document Detail


Action sounds recalibrate perceived tactile distance.
MedLine Citation:
PMID:  22789996     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Almost every bodily movement, from the most complex to the most mundane, such as walking, can generate impact sounds that contain 360° spatial information of high temporal resolution. Given the strong connection of auditory cues to our body actions, and the dependency of body-awareness on the interaction between peripheral sensory inputs and mental body-representations, one could assume that audition plays a specific role in this interaction. Despite the conclusive evidence for the role that the integration of vision, touch and proprioception plays in updating body-representations [1,2], hardly any study has looked at the contribution of audition. We show that the representation of a key property of one's body, like its length, is affected by the sound of one's actions. Participants tapped on a surface while progressively extending their right arm sideways, and in synchrony with each tap participants listened to a tapping sound. In the critical condition, the sound originated at double the distance at which participants actually tapped. After exposure to this condition, tactile distances on the test right arm, as compared to distances on the reference left arm, felt bigger than those before the exposure. No evidence of changes in tactile distance reports was found at the quadruple tapping sound distance or the asynchronous auditory feedback conditions. Our results suggest that tactile perception is referenced to an implicit body-representation which is informed by auditory feedback. This is the first evidence of the contribution of self-produced sounds to body-representation, addressing the auditory-dependent plasticity of body-representation and its spatial boundaries.
Authors:
Ana Tajadura-Jiménez; Aleksander Väljamäe; Iwaki Toshima; Toshitaka Kimura; Manos Tsakiris; Norimichi Kitagawa
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Publication Detail:
Type:  Letter    
Journal Detail:
Title:  Current biology : CB     Volume:  22     ISSN:  1879-0445     ISO Abbreviation:  Curr. Biol.     Publication Date:  2012 Jul 
Date Detail:
Created Date:  2012-07-13     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9107782     Medline TA:  Curr Biol     Country:  England    
Other Details:
Languages:  eng     Pagination:  R516-7     Citation Subset:  IM    
Copyright Information:
Copyright © 2012 Elsevier Ltd. All rights reserved.
Affiliation:
Laboratory of Action and Body, Department of Psychology, Royal Holloway, University of London, Egham, Surrey, TW20 0EX, UK; Human and Information Science Laboratory, NTT Communication Science Laboratories, NTT Corporation, Atsugi, Kanagawa, 243-0198, Japan.
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