Pre-exposure to moving form enhances static form sensitivity

Wallis, Thomas S. A., Williams, Mark A. and Arnold, Derek H. (2009) Pre-exposure to moving form enhances static form sensitivity. PLoS One, 4 12: Article number e8324. doi:10.1371/journal.pone.0008324

Author Wallis, Thomas S. A.
Williams, Mark A.
Arnold, Derek H.
Title Pre-exposure to moving form enhances static form sensitivity
Journal name PLoS One   Check publisher's open access policy
ISSN 1932-6203
Publication date 2009-12-17
Year available 2009
Sub-type Article (original research)
DOI 10.1371/journal.pone.0008324
Open Access Status DOI
Volume 4
Issue 12
Start page Article number e8324
Total pages 6
Editor Christopher Surridge
Place of publication San Francisco, CA, United States
Publisher Public Library of Science
Collection year 2010
Language eng
Subject 1799 Other Psychology and Cognitive Sciences
970117 Expanding Knowledge in Psychology and Cognitive Sciences
Formatted abstract
Motion-defined form can seem to persist briefly after motion ceases, before seeming to gradually disappear into the background. Here we investigate if this subjective persistence reflects a signal capable of improving objective measures of sensitivity to static form.

Methodology/Principal Findings

We presented a sinusoidal modulation of luminance, masked by a background noise pattern. The sinusoidal luminance modulation was usually subjectively invisible when static, but visible when moving. We found that drifting then stopping the waveform resulted in a transient subjective persistence of the waveform in the static display. Observers' objective sensitivity to the position of the static waveform was also improved after viewing moving waveforms, compared to viewing static waveforms for a matched duration. This facilitation did not occur simply because movement provided more perspectives of the waveform, since performance following pre-exposure to scrambled animations did not match that following pre-exposure to smooth motion. Observers did not simply remember waveform positions at motion offset, since removing the waveform before testing reduced performance.

Motion processing therefore interacts with subsequent static visual inputs in a way that can improve performance in objective sensitivity measures. We suggest that the brief subjective persistence of motion-defined forms that can occur after motion offsets is a consequence of the decay of a static form signal that has been transiently enhanced by motion processing.

Keyword Biological motion
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2010 Higher Education Research Data Collection
School of Psychology Publications
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Citation counts: TR Web of Science Citation Count  Cited 2 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 2 times in Scopus Article | Citations
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Created: Sun, 03 Jan 2010, 00:00:48 EST