| The effect of disrupting the human magnocellular pathway on global motion perception. | |
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MedLine Citation:
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PMID: 15358070 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The purpose of this study was to demonstrate the effect of human magnocellular (M)-pathway disruption on global motion perception. Coherence thresholds for global motion direction discrimination in random dot patterns were determined at slow and moderate dot speeds: (1) after adaptation to full-field sinusoidal flicker or a steady gray field, and (2) on a red or a gray background. Adaptation to flicker and a red background increased motion coherence thresholds relative to the gray baseline conditions at both dot speeds. Physiological studies have shown that M cells in the retina and LGN are inhibited by red light and are a main contributor to flicker perception in monkeys. Therefore, our results suggest that interference with processing in the subcortical M pathway disrupts higher-level motion integration. |
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Authors:
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Craig Chapman; Ryan Hoag; Deborah Giaschi |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Vision research Volume: 44 ISSN: 0042-6989 ISO Abbreviation: Vision Res. Publication Date: 2004 |
Date Detail:
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Created Date: 2004-09-10 Completed Date: 2005-01-18 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0417402 Medline TA: Vision Res Country: England |
Other Details:
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Languages: eng Pagination: 2551-7 Citation Subset: IM |
Copyright Information:
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Copyright 2004 Elsevier Ltd. |
Affiliation:
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Department of Ophthalmology and Visual Sciences, University of British Columbia, 4480 Oak Street, Room A146, Vancouver, BC, Canada V6H 3V4. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Adult Discrimination (Psychology) / physiology Female Humans Male Motion Perception / physiology* Pattern Recognition, Visual / physiology Photic Stimulation / methods Psychophysics Sensory Thresholds Visual Pathways / physiology* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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