| Reaction Time to Motion Onset and Magnitude Estimation of Velocity in the Presence of Background Motion. | |
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MedLine Citation:
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PMID: 21458480 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Reaction times (RT) to motion onset of a target grating moving at 0.4, 0.6, 0.8, 1.0 or 1.6 °/s and magnitude estimation of the same velocities were studied in the presence of the surrounding background motion which was either in the same or opposite direction. Surprisingly, we found no relative motion effect: if the background motion, irrespective of its direction, affected the target, then it delayed the RTs and decreased velocity ratings. The background motion was effective on RTs to motion onset only when the target was relatively small and immediately surrounded by a moving background. Increases in RTs were mostly explained by an apparent slowdown of the target stimulus velocity which was caused by the interference from the moving background. The background motion also affected velocity ratings by decreasing them without systematic effect of the background motion direction. |
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Authors:
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Nele Kuldkepp; Kairi Kreegipuu; Aire Raidvee; Jüri Allik |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-3-30 |
Journal Detail:
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Title: Vision research Volume: - ISSN: 1878-5646 ISO Abbreviation: - Publication Date: 2011 Mar |
Date Detail:
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Created Date: 2011-4-4 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0417402 Medline TA: Vision Res Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2011. Published by Elsevier Ltd. |
Affiliation:
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Institute of Psychology, Estonian Center of Behavioral and Health Sciences, University of Tartu, Estonia. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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