NDLI: Time course of grouping of shape by perceptual closure: Effects of spatial proximity and collinearity

Content Provider	Springer Nature Link
Author	Hadad, Bat Sheva Kimchi, Ruth
Copyright Year	2008
Abstract	We examined time course of grouping of shape by perceptual closure in three experiments using a primed matching task. The gaps between the closure-inducing contours varied in size. In addition, depending on the distribution of the gaps along the closure-inducing contours—occurring at straight contour segments or at the point of change in contour direction—collinearity was either present or absent. In the absence of collinearity, early priming of the shape was observed for spatially close fragments, but not for spatially distant fragments. When collinearity was available, the shape of both spatially close and spatially distant fragments was primed at brief exposures. These results suggest that spatial proximity is critical for the rapid grouping of shape by perceptual closure in the absence of collinearity, but collinearity facilitates the rapid grouping of shape when the closureinducing fragments are spatially distant. In addition, shape priming persisted over time only when the collinear fragments were spatially close, suggesting that a stable representation of shape depends both on collinearity and spatial proximity between the closure-inducing fragments.
Starting Page	818
Ending Page	827
Page Count	10
File Format	PDF
ISSN	00315117
Journal	Perception & Psychophysics
Volume Number	70
Issue Number	5
e-ISSN	15325962
Language	English
Publisher	Springer-Verlag
Publisher Date	2008-01-01
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Cognitive Psychology
Content Type	Text
Resource Type	Article
Subject	Experimental and Cognitive Psychology Sensory Systems Psychology

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