Document Detail


The tactile integration of local motion cues is analogous to its visual counterpart.
MedLine Citation:
PMID:  18524953     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The visual and somatosensory systems have been shown to process spatial information similarly. Here we investigate tactile motion processing using stimuli whose perceptual properties have been well established in vision research, namely superimposed gratings (plaids), barber poles, and bar fields. In both modalities, information about stimulus motion (speed and direction) conveyed by neurons at low levels of sensory processing is ambiguous, a conundrum known as the aperture problem. Our results suggest that the tactile perception of motion, analogous to its visual counterpart, operates in multiple stages: first, the perceived direction of motion is determined by a majority vote from local motion detectors, which are subject to the aperture problem. As in vision, the conflict between the cues from terminators and other local motion cues is gradually resolved over time so that the perceived direction approaches the veridical direction of motion.
Authors:
Y C Pei; S S Hsiao; S J Bensmaia
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Publication Detail:
Type:  Clinical Trial; Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't     Date:  2008-06-04
Journal Detail:
Title:  Proceedings of the National Academy of Sciences of the United States of America     Volume:  105     ISSN:  1091-6490     ISO Abbreviation:  Proc. Natl. Acad. Sci. U.S.A.     Publication Date:  2008 Jun 
Date Detail:
Created Date:  2008-06-11     Completed Date:  2008-06-27     Revised Date:  2009-11-18    
Medline Journal Info:
Nlm Unique ID:  7505876     Medline TA:  Proc Natl Acad Sci U S A     Country:  United States    
Other Details:
Languages:  eng     Pagination:  8130-5     Citation Subset:  IM    
Affiliation:
Krieger Mind/Brain Institute, Johns Hopkins University, 338 Krieger Hall, 3400 North Charles Street, Baltimore, MD 21218, USA.
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Adult
Cues*
Female
Humans
Male
Motion*
Time Factors
Touch / physiology*
Visual Pathways / physiology*
Visual Perception / physiology
Grant Support
ID/Acronym/Agency:
DC-00095/DC/NIDCD NIH HHS; NS-18787/NS/NINDS NIH HHS; NS-38034/NS/NINDS NIH HHS
Comments/Corrections

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