| The effects of dynamic visual stimulation on perception and motor control. | |
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MedLine Citation:
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PMID: 1342403 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A set of research findings is described that deals with three principal laboratory measures of visual orientation (vection and postural and manual control). Two studies are highlighted, one of which compared the latencies of vection and visually induced postural change and the other of which investigated manual tracking under visually disorienting conditions. The first study showed that although vection and postural change are somewhat related to each other (for example, both were greater in response to roll and pitch as opposed to linear visual motion), the onset of vection is delayed by several seconds relative to the initiation of visually induced postural shifts. The second study showed that manual biases induced by visual roll motion are not overcome using a thumb-and-forefinger (pyramidal) motor strategy, and may not be equivalent to the "giant hand" illusion that is believed to reflect the predominance of the vestibulospinal (extrapyramidal) motor pathways during extreme spatial disorientation. These and other findings indicate that various visual orientation effects may involve at least partially independent mechanisms. |
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Authors:
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F H Previc |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.; Review |
Journal Detail:
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Title: Journal of vestibular research : equilibrium & orientation Volume: 2 ISSN: 0957-4271 ISO Abbreviation: J Vestib Res Publication Date: 1992 |
Date Detail:
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Created Date: 1994-02-07 Completed Date: 1994-02-07 Revised Date: 2007-11-15 |
Medline Journal Info:
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Nlm Unique ID: 9104163 Medline TA: J Vestib Res Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 285-95 Citation Subset: IM; S |
Affiliation:
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Crew Technology Division, Armstrong Laboratory, Brooks Air Force Base, Texas 78235-5104. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Humans Motion Perception / physiology Motor Activity / physiology Orientation Posture Psychomotor Performance / physiology* Vestibule, Labyrinth / physiology Visual Perception / physiology* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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