Document Detail

An objective criterion for apparent motion based on phase discrimination.
MedLine Citation:
PMID:  8440988     Owner:  NLM     Status:  MEDLINE    
Studies of visual apparent motion have relied on observers' subjective self-reports of experienced motion, for which there is no objective criterion of right or wrong. A new method of phase discrimination is reported that may offer an objective indicator of apparent motion. Ss discriminated the direction of an objective 75-ms phase shift, away from strict temporal alternation of 2 stimulus dots. Accuracy increased from 50% to 100% correct as rate of alternation and distance between the dots was decreased, in conformity with Korte's third law of apparent motion. This and additional evidence suggests that phase discrimination may be mediated by asymmetries between the experienced strengths of leftward and rightward motion. Phase discrimination may also be adaptable to the study of apparent motion and related phenomena in other sensory modalities and other animal species.
G F Miller; R N Shepard
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Journal of experimental psychology. Human perception and performance     Volume:  19     ISSN:  0096-1523     ISO Abbreviation:  J Exp Psychol Hum Percept Perform     Publication Date:  1993 Feb 
Date Detail:
Created Date:  1993-04-01     Completed Date:  1993-04-01     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  7502589     Medline TA:  J Exp Psychol Hum Percept Perform     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  48-62     Citation Subset:  IM    
Department of Psychology, Stanford University, California 94305-2130.
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MeSH Terms
Discrimination Learning*
Distance Perception
Motion Perception*
Optical Illusions*
Pattern Recognition, Visual

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

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