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Effects of vision and friction on haptic perception.

Identifieur interne : 001738 ( PubMed/Corpus ); précédent : 001737; suivant : 001739

Effects of vision and friction on haptic perception.

Auteurs : Jesse O. Perreault ; Caroline G L. Cao

Source :

RBID : pubmed:17063970

English descriptors

Abstract

Two experiments were conducted to examine the effects of vision and masking friction on contact perception and compliance differentiation thresholds in a simulated tissue-probing task.

PubMed: 17063970

Links to Exploration step

pubmed:17063970

Le document en format XML

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<nlm:affiliation>Department of Mechanical Engineering, Tufts University, Medford, MA 02155, USA.</nlm:affiliation>
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<name sortKey="Cao, Caroline G L" sort="Cao, Caroline G L" uniqKey="Cao C" first="Caroline G L" last="Cao">Caroline G L. Cao</name>
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<term>Humans</term>
<term>Male</term>
<term>Touch</term>
<term>United States</term>
<term>User-Computer Interface</term>
<term>Visual Perception</term>
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<term>Adult</term>
<term>Connective Tissue</term>
<term>Female</term>
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<div type="abstract" xml:lang="en">Two experiments were conducted to examine the effects of vision and masking friction on contact perception and compliance differentiation thresholds in a simulated tissue-probing task.</div>
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<AbstractText Label="OBJECTIVE" NlmCategory="OBJECTIVE">Two experiments were conducted to examine the effects of vision and masking friction on contact perception and compliance differentiation thresholds in a simulated tissue-probing task.</AbstractText>
<AbstractText Label="BACKGROUND" NlmCategory="BACKGROUND">In minimally invasive surgery, the surgeon receives limited haptic feedback because of the current design of the instrumentation and relies on visual feedback to judge the amount of force applied to the tissues. It is suggested that friction forces inherent in the instruments contribute to errors in surgeons' haptic perception. This paper investigated the psychophysics of contact detection and cross-modal sensory processing in the context of minimally invasive surgery.</AbstractText>
<AbstractText Label="METHOD" NlmCategory="METHODS">A within-subjects repeated measures design was used, with friction, vision, tissue softness, and order of presentation as independent factors, and applied force, detection time, error, and confidence as dependent measures. Eight participants took part in each experiment, with data recorded by a custom force-sensing system.</AbstractText>
<AbstractText Label="RESULTS" NlmCategory="RESULTS">In both detection and differentiation tasks, higher thresholds, longer detection times, and more errors were observed when vision was not available. The effect was more pronounced when haptic feedback was masked by friction forces in the surgical device (p < .05).</AbstractText>
<AbstractText Label="CONCLUSION" NlmCategory="CONCLUSIONS">Visual and haptic feedback were equally important for tissue compliance differentiation.</AbstractText>
<AbstractText Label="APPLICATION" NlmCategory="CONCLUSIONS">A frictionless endoscopic instrument can be designed to restore critical haptic information to surgeons without having to create haptic feedback artificially.</AbstractText>
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