| Reduced perceptual sensitivity for biological motion in paraplegia patients. | |
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MedLine Citation:
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PMID: 22115454 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Many physiological and psychophysical studies suggest that the perception and execution of movement may be linked [1-4]. Here we ask whether severe impairment of locomotion could impact on the capacity to perceive human locomotion. We measured sensitivity for the perception of point-light walkers - animation sequences of human biological motion portrayed by only the joints - in patients with severe spinal injury. These patients showed a huge (nearly three-fold) reduction of sensitivity for detecting and for discriminating the direction of biological motion compared with healthy controls, and also a smaller (∼40%) reduction in sensitivity to simple translational motion. However, they showed no statistically significant reduction in contrast sensitivity for discriminating the orientation of static gratings. The results point to a strong interaction between perceiving and producing motion, implicating shared algorithms and neural mechanisms. |
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Authors:
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Roberto Arrighi; Giulia Cartocci; David Burr |
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Publication Detail:
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Type: Letter |
Journal Detail:
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Title: Current biology : CB Volume: 21 ISSN: 1879-0445 ISO Abbreviation: Curr. Biol. Publication Date: 2011 Nov |
Date Detail:
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Created Date: 2011-11-25 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9107782 Medline TA: Curr Biol Country: England |
Other Details:
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Languages: eng Pagination: R910-1 Citation Subset: IM |
Copyright Information:
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Copyright © 2011 Elsevier Ltd. All rights reserved. |
Affiliation:
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Dipartimento di Psicologia, Università degli Studi di Firenze, Firenze, Via San salvi 12 Italy. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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