Document Detail

Judging rolling wheels: dynamic and kinematic aspects of rotation-translation coupling.
MedLine Citation:
PMID:  8190595     Owner:  NLM     Status:  MEDLINE    
Four experiments were carried out to investigate observers' abilities to judge rolling motions. The experiments were designed to assess whether two important aspects of such motions are appreciated: the kinematic coupling of rotation and translation, and the dynamic effects of gravity. Different motion contexts of rolling wheels were created using computer-generated displays. The first experiment involved wheels rolling down an inclined plane. Observers spontaneously appreciated the anomaly of wheels that failed to accelerate, but they were not able to differentiate between different acceleration functions. Moreover, their judgments were almost exclusively based on the translation component of the rolling motion, neglecting the rotation component. In a second experiment it was found that observers could accurately estimate the perimeter of various objects. Thus, their inability to consider rotation information is not attributable to misperceptions of the geometry of wheels. In a third experiment the finding that rolling wheels appear to overrotate was replicated; however, findings from this experiment also showed, together with those from a fourth experiment, that observers are able to make very accurate judgments about translation-rotation coupling in rolling wheels when information is provided about the orientation of the wheel and the texture of the surface on which it rolls.
H Hecht
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Perception     Volume:  22     ISSN:  0301-0066     ISO Abbreviation:  Perception     Publication Date:  1993  
Date Detail:
Created Date:  1994-06-17     Completed Date:  1994-06-17     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0372307     Medline TA:  Perception     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  917-28     Citation Subset:  IM; S    
NASA Ames Research Center, Moffett Field, CA 94035-1000.
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MeSH Terms
Motion Perception*
Optical Illusions
Photic Stimulation

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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