| The tolerance for visual feedback distortions in a virtual environment. | |
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MedLine Citation:
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PMID: 12527014 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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We are interested in using a virtual environment with a robotic device to extend the strength and mobility of people recovering from strokes by steering them beyond what they had thought they were capable of doing. Previously, we identified just noticeable differences (JND) of a finger's force production and position displacement in a virtual environment. In this paper, we extend this investigation by identifying peoples' tolerance for distortions of visual representations of force production and positional displacement in a virtual environment. We determined that subjects are not capable of reliably detecting inaccuracies in visual representation until there is 36% distortion. This discrepancy between actual and perceived movements is significantly larger than the JNDs reported in the past, indicating that a virtual robotic environment could be a valuable tool for steering actual movements further away from perceived movements. We believe this distorted condition may allow people recovering from strokes, even those who have perceptual or cognitive deficits, to rehabilitate with greater ease. |
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Authors:
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Yoky Matsuoka; Sonya J Allin; Roberta L Klatzky |
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Publication Detail:
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Type: Clinical Trial; Journal Article |
Journal Detail:
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Title: Physiology & behavior Volume: 77 ISSN: 0031-9384 ISO Abbreviation: Physiol. Behav. Publication Date: 2002 Dec |
Date Detail:
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Created Date: 2003-01-15 Completed Date: 2003-07-11 Revised Date: 2007-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0151504 Medline TA: Physiol Behav Country: United States |
Other Details:
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Languages: eng Pagination: 651-5 Citation Subset: IM |
Affiliation:
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Robotics Institute and Mechanical Engineering, Carnegie Mellon University, 5000 Forbes Avenue, NSH3207, 15213, Pittsburgh, PA, USA. yok@cs.cmu.edu |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Computer Graphics* Feedback / physiology* Female Fingers / innervation, physiology Humans Male Proprioception / physiology Robotics* Space Perception / physiology Stroke / rehabilitation Touch / physiology* |
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