Illusory Rotation of a Spoked Wheel

Illusory Rotation of a Spoked Wheel

A disk was divided into 16 stationary sectors of different grey levels that stepped around clockwise. When thin stationary spokes of constant mid-grey separated the sectors, the spokes showed robust and striking counterclockwise apparent motion, and when stopped, they gave a brisk clockwise motion a...

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Bibliographic Details
Main Authors: Stuart Anstis, Brian Rogers
Format: Article
Language:English
Published: SAGE Publishing 2011-09-01
Series:i-Perception
Online Access:https://doi.org/10.1068/i0483
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spelling doaj-7bdfdc3eb3af467da8c1ee1f7a7e34f62020-11-25T03:49:53ZengSAGE Publishingi-Perception2041-66952011-09-01210.1068/i048310.1068_i0483Illusory Rotation of a Spoked WheelStuart AnstisBrian RogersA disk was divided into 16 stationary sectors of different grey levels that stepped around clockwise. When thin stationary spokes of constant mid-grey separated the sectors, the spokes showed robust and striking counterclockwise apparent motion, and when stopped, they gave a brisk clockwise motion aftereffect. The spokes had to match the grey of some of the sectors. We attribute these effects to small displacements across the thickness of the spokes that stimulated hard-wired motion detectors.https://doi.org/10.1068/i0483
collection DOAJ
language English
format Article
sources DOAJ
author Stuart Anstis
Brian Rogers
spellingShingle Stuart Anstis
Brian Rogers
Illusory Rotation of a Spoked Wheel
i-Perception
author_facet Stuart Anstis
Brian Rogers
author_sort Stuart Anstis
title Illusory Rotation of a Spoked Wheel
title_short Illusory Rotation of a Spoked Wheel
title_full Illusory Rotation of a Spoked Wheel
title_fullStr Illusory Rotation of a Spoked Wheel
title_full_unstemmed Illusory Rotation of a Spoked Wheel
title_sort illusory rotation of a spoked wheel
publisher SAGE Publishing
series i-Perception
issn 2041-6695
publishDate 2011-09-01
description A disk was divided into 16 stationary sectors of different grey levels that stepped around clockwise. When thin stationary spokes of constant mid-grey separated the sectors, the spokes showed robust and striking counterclockwise apparent motion, and when stopped, they gave a brisk clockwise motion aftereffect. The spokes had to match the grey of some of the sectors. We attribute these effects to small displacements across the thickness of the spokes that stimulated hard-wired motion detectors.
url https://doi.org/10.1068/i0483
work_keys_str_mv AT stuartanstis illusoryrotationofaspokedwheel
AT brianrogers illusoryrotationofaspokedwheel
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