| Perceived motion induced by a neglected stimulus. | |
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MedLine Citation:
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PMID: 19969008 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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An illusion of motion can be induced by presenting a horizontal line suddenly between two visual markers. If one marker is briefly illuminated (the "cue") prior to the appearance of the line, the line appears to spread from the cue toward the other marker. This is termed the line-motion illusion, and was here reliably demonstrated in a sample of elderly participants. Two patients with left hemineglect reliably reported rightward spread when the cue was on the left, despite being unable to detect the cue when presented without the line. Indeed, rightward motion following a left-sided cue was reported more reliably than leftward motion following a right-sided cue, and one patient effectively failed to report the illusion as a leftward spread at all. These results support the view that low-level mechanisms process motion in the absence of attention, but the attentional bias in neglect then inhibits the reporting of motion into the neglected side. |
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Authors:
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Arwen Markwick; Michael C Corballis |
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Publication Detail:
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Type: Journal Article Date: 2009-12-05 |
Journal Detail:
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Title: Neuropsychologia Volume: 48 ISSN: 1873-3514 ISO Abbreviation: Neuropsychologia Publication Date: 2010 Mar |
Date Detail:
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Created Date: 2010-02-24 Completed Date: 2010-06-09 Revised Date: 2010-08-30 |
Medline Journal Info:
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Nlm Unique ID: 0020713 Medline TA: Neuropsychologia Country: England |
Other Details:
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Languages: eng Pagination: 1041-6 Citation Subset: IM |
Copyright Information:
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Copyright (c) 2009 Elsevier Ltd. All rights reserved. |
Affiliation:
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Department of Psychology, University of Auckland, Auckland 1142, New Zealand. Arwen.markwick@dpag.ox.ac.uk |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Aged Aged, 80 and over Attention* Cues Female Functional Laterality* Humans Male Middle Aged Motion Perception* Neuropsychological Tests Optical Illusions* Orientation Pattern Recognition, Visual* Space Perception* Task Performance and Analysis Visual Fields |
| Comments/Corrections | |
Erratum In:
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Neuropsychologia. 2010 Sep;48(11):3376 |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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