| Inconsistency between peri-saccadic mislocalization and compression: evidence for separate "what" and "where" visual systems. | |
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MedLine Citation:
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PMID: 21047764 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The view of two separate "what" and "where" visual systems is supported by compelling neurophysiological evidence. However, very little direct psychophysical evidence has been presented to suggest that the two functions can be separated in neurologically intact persons. Using a peri-saccadic perception paradigm in which bars of different lengths were flashed around saccade onset, we directly measured the perceived object size (a "what" attribute) and location (a "where" attribute). We found that the perceived object location shifted toward the saccade target to show strongly compressed localization, whereas the perceived object size was not compressed accordingly. This dissociation indicates that the perceived size is not determined by spatial localization of the object boundary, providing direct psychophysical evidence to support that "what" and "where" attributes of objects are indeed processed separately. |
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Authors:
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Gang Luo; Tyler Garaas; Marc Pomplun; Eli Peli |
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Publication Detail:
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Type: Journal Article; Research Support, N.I.H., Extramural Date: 2010-10-26 |
Journal Detail:
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Title: Journal of vision Volume: 10 ISSN: 1534-7362 ISO Abbreviation: J Vis Publication Date: 2010 |
Date Detail:
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Created Date: 2010-11-04 Completed Date: 2011-02-24 Revised Date: 2011-09-26 |
Medline Journal Info:
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Nlm Unique ID: 101147197 Medline TA: J Vis Country: United States |
Other Details:
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Languages: eng Pagination: 32 Citation Subset: IM |
Affiliation:
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Schepens Eye Research Institute, Department of Ophthalmology, Harvard Medical School, Boston, USA. gang.luo@schepens.harvard.edu |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Form Perception
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physiology* Humans Models, Neurological Photic Stimulation / methods Psychophysics* Saccades / physiology* Space Perception / physiology* Visual Pathways / physiology* |
| Grant Support | |
ID/Acronym/Agency:
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AG034553/AG/NIA NIH HHS; EY019545/EY/NEI NIH HHS; EY05957/EY/NEI NIH HHS; EY12890/EY/NEI NIH HHS; R01 EY005957-16/EY/NEI NIH HHS; R01 EY012890-10/EY/NEI NIH HHS; R21 AG034553-01/AG/NIA NIH HHS; R21 EY019545-02/EY/NEI NIH HHS |
| Comments/Corrections | |
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