| Somatotopic or spatiotopic? Frame of reference for localizing thermal sensations under thermo-tactile interactions. | |
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MedLine Citation:
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PMID: 20675809 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The thermal sense is diffuse and incapable of providing precise spatial information. From a phenomenon known as thermal referral, we know that touch influences the localization of cold or warmth, leading to our perceiving illusory thermal sensations at a thermally neutral site. This study investigated the frame of reference for localizing thermal sensations under thermal referral in order to shed light on how thermal and tactile modalities coordinate to process localization information. One thermally neutral tactile stimulator and two cold (warm) stimulators were presented to different sets of three fingers of both hands. The location of the neutral tactile stimulator varied, and the strength of the referral was estimated from participants' performance in localizing the neutral tactile stimulator. By manipulating the somatotopic and spatiotopic distances between the stimulated sites, we found that the somatotopic distance--more specifically, the distance between and among the sites being defined in cortical topography--determines the strength of thermal referral. Our findings suggest that localization of thermal sensations under thermo-tactile interactions is processed with respect to the somatotopic frame of reference and that this cross-modal processing resides in early cortical areas whose organization conserves topographic information. |
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Authors:
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Hsin-Ni Ho; Junji Watanabe; Hideyuki Ando; Makio Kashino |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Attention, perception & psychophysics Volume: 72 ISSN: 1943-393X ISO Abbreviation: Atten Percept Psychophys Publication Date: 2010 Aug |
Date Detail:
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Created Date: 2010-08-02 Completed Date: 2010-12-28 Revised Date: 2011-02-24 |
Medline Journal Info:
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Nlm Unique ID: 101495384 Medline TA: Atten Percept Psychophys Country: United States |
Other Details:
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Languages: eng Pagination: 1666-75 Citation Subset: IM |
Affiliation:
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NTT Communication Science Laboratories, Atsugi, Japan. hsinni@avg.brl.ntt.co.jp |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Attention* Discrimination (Psychology)* Female Hand Humans Illusions* Male Orientation* Sensory Deprivation Sensory Thresholds Thermosensing* Touch* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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