The shape of motion perception: global pooling of transformational apparent motion

Tang, Matthew F., Dickinson, J. Edwin, Visser, Troy A. W., Edwards, Mark and Badcock, David R. (2013) The shape of motion perception: global pooling of transformational apparent motion. Journal of Vision, 13 13: . doi:10.1167/13.13.20

Author Tang, Matthew F.
Dickinson, J. Edwin
Visser, Troy A. W.
Edwards, Mark
Badcock, David R.
Title The shape of motion perception: global pooling of transformational apparent motion
Journal name Journal of Vision   Check publisher's open access policy
ISSN 1534-7362
Publication date 2013-11-01
Sub-type Article (original research)
DOI 10.1167/13.13.20
Open Access Status DOI
Volume 13
Issue 13
Total pages 1
Place of publication Rockville, MD, United States
Publisher Association for Research in Vision and Ophthalmology
Language eng
Abstract Transformational apparent motion (TAM) is a visual phenomenon highlighting the utility of form information in motion processing. In TAM, smooth apparent motion is perceived when shapes in certain spatiotemporal arrangements change. It has been argued that TAM relies on a separate high-level form-motion system. Few studies have, however, systematically examined how TAM relates to conventional low-level motion-energy systems. To this end, we report a series of experiments showing that, like conventional motion stimuli, multiple TAM signals can combine into a global motion percept. We show that, contrary to previous claims, TAM does not require selective attention, and instead, multiple TAM signals can be simultaneously combined with coherence thresholds reflecting integration across the entire stimulus area. This system is relatively weak, less tolerant to noise, and easily overridden when motion energy cues are sufficiently strong. We conclude that TAM arises from high-level form-motion information that enters the motion system by, at least, the stage of global motion pooling.
Keyword Form-motion interactions
High-level motion
Illusory motion
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Queensland Brain Institute Publications
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Citation counts: TR Web of Science Citation Count  Cited 4 times in Thomson Reuters Web of Science Article | Citations
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