Document Detail

Vibrotactile adaptation impairs discrimination of fine, but not coarse, textures.
MedLine Citation:
PMID:  11794728     Owner:  NLM     Status:  MEDLINE    
The effect of vibrotactile adaptation on the ability to discriminate textured surfaces was examined in three experiments. The surfaces were rectilinear arrays of pyramids produced by etching of silicon wafers. Adaptation to 100-Hz vibration severely hampered discrimination of surfaces with spatial periods below 100 microm (Experiment 1), but had little effect on the discrimination of coarser textures (Experiment 2). To determine which vibrotactile channel--Rapidly Adapting or Pacinian--plays the larger role in mediating the discrimination of fine textures, widely separated adapting frequencies (10 and 250 Hz) were used in Experiment 3. The fact that high- but not low-frequency adaptation interfered with discrimination suggests that the Pacinian system contributes importantly to this ability. Taken as a whole, the results of this study strongly support the duplex theory of tactile texture perception, according to which different mechanisms--spatial and vibrotactile--mediate the perception of coarse and fine textures, respectively.
M Hollins; S J Bensmaïa; S Washburn
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Publication Detail:
Type:  Clinical Trial; Journal Article; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Somatosensory & motor research     Volume:  18     ISSN:  0899-0220     ISO Abbreviation:  Somatosens Mot Res     Publication Date:  2001  
Date Detail:
Created Date:  2002-01-16     Completed Date:  2002-06-14     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8904127     Medline TA:  Somatosens Mot Res     Country:  England    
Other Details:
Languages:  eng     Pagination:  253-62     Citation Subset:  IM    
Department of Psychology, University of North Carolina, Chapel Hill 27599, USA.
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MeSH Terms
Adaptation, Psychological / physiology*
Discrimination (Psychology) / physiology*
Fingers / innervation,  physiology
Microscopy, Electron, Scanning
Psychomotor Performance / physiology
Surface Properties
Touch / physiology*

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