Apparent Rotation of a Line Superimposed upon Radially Expanding and Contracting Backgrounds

An oblique line superimposed on a vertical or horizontal grating appears to rotate when the whole pattern is expanded or contracted. The apparent rotation occurs with head movements towards or away from a stationary grating, or with zooming a grating relative to a stationary observer. The magnitude...

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Published in:Perception (London) 1981-01, Vol.10 (3), p.265-271
Main Authors: Swanston, Michael T, Wade, Nicholas J
Format: Article
Language:English
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cited_by cdi_FETCH-LOGICAL-c280t-4f21f1cc198ffe4c379b35b8d2204e448f9e0ffd3e9b533ecda3f2e53313565d3
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container_title Perception (London)
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creator Swanston, Michael T
Wade, Nicholas J
description An oblique line superimposed on a vertical or horizontal grating appears to rotate when the whole pattern is expanded or contracted. The apparent rotation occurs with head movements towards or away from a stationary grating, or with zooming a grating relative to a stationary observer. The magnitude and direction of the apparent rotation is dependent upon the relative inclination of the line to the grating and is most pronounced with a relative orientation of 45°.
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title Apparent Rotation of a Line Superimposed upon Radially Expanding and Contracting Backgrounds
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