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The freezing rotation illusion


Dürsteler, M R (2008). The freezing rotation illusion. In: Kennard, C; Leigh, R J. Using eye movements as an experimental probe of brain function. Amsterdam: Elsevier, 383-385.

Abstract

The "freezing rotation illusion" refers to decrease in perceived speed of a continuously rotating
central region when a swaying surround co-rotates. We observed the following effects for rotations: First,
when the centre and its surround are turning in the same direction, and their velocities are distinguishable,
the perceived speed of the centre is lower than its physical speed. Second, when the surround and the centre
are counter-rotating, the perceived speed of the centre is enhanced. Third, even when the surface size of the
centre matches the surface size of the surround, swaying of the centre is unable to induce significant
changes in the perceived speed of the surround, whereas swaying of the surround still induces changes in
the perceived speed of the centre.

The "freezing rotation illusion" refers to decrease in perceived speed of a continuously rotating
central region when a swaying surround co-rotates. We observed the following effects for rotations: First,
when the centre and its surround are turning in the same direction, and their velocities are distinguishable,
the perceived speed of the centre is lower than its physical speed. Second, when the surround and the centre
are counter-rotating, the perceived speed of the centre is enhanced. Third, even when the surface size of the
centre matches the surface size of the surround, swaying of the centre is unable to induce significant
changes in the perceived speed of the surround, whereas swaying of the surround still induces changes in
the perceived speed of the centre.

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Additional indexing

Item Type:Book Section, refereed, further contribution
Communities & Collections:04 Faculty of Medicine > University Hospital Zurich > Clinic for Neurology
Dewey Decimal Classification:610 Medicine & health
Uncontrolled Keywords:motion illusion; motion perception; figure-ground; induced motion
Language:English
Date:2008
Deposited On:27 Nov 2008 09:09
Last Modified:05 Apr 2016 12:31
Publisher:Elsevier
Series Name:Progress in Brain Research
Number:Vol. 1
ISBN:978-0-444-53163-6
Additional Information:The illusion won the first prize in the Best Visual Illusion of the Year 2006 Contest in Sarasota Fl. http://illusioncontest.neuralcorrelate.com/index.php?module=pagemaster&PAGE_user_op=view_page&PAGE_id=84
Permanent URL: http://doi.org/10.5167/uzh-4744

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