Document Detail


Effects of speed, age, and amblyopia on the perception of motion-defined form.
MedLine Citation:
PMID:  21911002     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
We determined the effect of dot speed on the typical and atypical development of motion-defined form perception. Monocular motion coherence thresholds for orientation discrimination of motion-defined rectangles were determined at slow (0.1deg/s), medium (0.9deg/s) and fast (5.0deg/s) dot speeds. First we examined typical development from age 4 to 31years. We found that performance was most immature at the slow speed and in the youngest group of children (4-6years). Next we measured motion-defined form perception in the amblyopic and fellow eyes of patients with amblyopia. Deficits were found in both eyes and were most pronounced at the slow speed. These results demonstrate the importance of dot speed to the development of motion-defined form perception. Implications regarding sensitive periods and the neural correlates of motion-defined form perception are discussed.
Authors:
Jake Hayward; Grace Truong; Marita Partanen; Deborah Giaschi
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-9-1
Journal Detail:
Title:  Vision research     Volume:  -     ISSN:  1878-5646     ISO Abbreviation:  -     Publication Date:  2011 Sep 
Date Detail:
Created Date:  2011-9-13     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0417402     Medline TA:  Vision Res     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011. Published by Elsevier Ltd.
Affiliation:
University of British Columbia, Department of Ophthalmology and Visual Sciences, Vancouver, BC, Canada.
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