Document Detail

Rendering edge enhancement tactile phenomenon by friction variation in dynamic touch.
MedLine Citation:
PMID:  20832802     Owner:  NLM     Status:  In-Process    
Variable friction tactile displays have been recently used to render virtual textures and gratings. Neural basis of perceptual mechanism of detection of edge-like features resulting in discrimination of virtual gratings during active touching these tactile actuators is studied using a finite-element biomechanical model of human fingertip. The predicted neural response of the mechanoreceptors, i.e. the computed strain energy density at the location of selected mechanoreceptors as a measure of neural discharge rate of the corresponding receptors, to local reduction of friction between fingerpad and surface are shown to exhibit a similar shape as the edge enhancement phenomenon, particularly in a sudden burst at the boundary of variable friction regions. This phenomenon is supposed to account for the illusion of virtual edges rendered through the modification of contact forces. The presence of this sudden burst under varied model parameters was investigated. It was shown that while the appearance of this phenomenon in simulation results was invariant to model parameters, associated alteration of the edge enhancement ratio might be considered for the purpose of the tuning of the variable friction tactile display.
Mohammad Abdolvahab
Publication Detail:
Type:  Journal Article     Date:  2010-09-15
Journal Detail:
Title:  Journal of biomechanics     Volume:  44     ISSN:  1873-2380     ISO Abbreviation:  J Biomech     Publication Date:  2011 Jan 
Date Detail:
Created Date:  2010-12-17     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0157375     Medline TA:  J Biomech     Country:  United States    
Other Details:
Languages:  eng     Pagination:  92-6     Citation Subset:  IM    
Copyright Information:
Copyright © 2010 Elsevier Ltd. All rights reserved.
Department of Computer Science, University of Sciences and Technology of Lille, Cité Scientifique, 59655, Villeneuve d'Ascq, France.
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