Document Detail

Poggendorff illusion as a function of orientation of transversal and parallel lines.
MedLine Citation:
PMID:  958839     Owner:  NLM     Status:  MEDLINE    
Adult human subjects (8 male, 8 female undergraduates) with normal vision were required to judge various orientations of the Poggendorff illusion. The transversal and parallel line-segments of the illusion were manipulated to produce the orientations to be judged. Minimum illusion occured when the transversal line-segment was oriented 90 degrees with respect to true vertical or true horizontal. Magnitude of illusion increased as the transversal line-segment deviated from these positions. The findings suggested that there is a stability of horizontal and vertical orientations. In addition, the hypothesis that visual acuity plays a role in the perception of the Poggendorff illusion was proposed.
B S Anton
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Perceptual and motor skills     Volume:  43     ISSN:  0031-5125     ISO Abbreviation:  Percept Mot Skills     Publication Date:  1976 Aug 
Date Detail:
Created Date:  1976-10-29     Completed Date:  1976-10-29     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0401131     Medline TA:  Percept Mot Skills     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  83-90     Citation Subset:  IM    
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MeSH Terms
Optical Illusions*
Sex Factors
Size Perception
Visual Acuity

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

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