| MT neurons combine visual motion with a smooth eye movement signal to code depth-sign from motion parallax. | |
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MedLine Citation:
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PMID: 19709633 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The capacity to perceive depth is critical for an observer to interact with his or her surroundings. During observer movement, information about depth can be extracted from the resulting patterns of image motion on the retina (motion parallax). Without extraretinal signals related to observer movement, however, depth-sign (near versus far) from motion parallax can be ambiguous. We previously demonstrated that MT neurons combine visual motion with extraretinal signals to code depth-sign from motion parallax in the absence of other depth cues. In that study, head translations were always accompanied by compensatory tracking eye movements, allowing at least two potential sources of extraretinal input. We now show that smooth eye movement signals provide the critical extraretinal input to MT neurons for computing depth-sign from motion parallax. Our findings demonstrate a powerful modulation of MT activity by eye movements, as predicted by human studies of depth perception from motion parallax. |
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Authors:
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Jacob W Nadler; Mark Nawrot; Dora E Angelaki; Gregory C DeAngelis |
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Publication Detail:
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Type: Comparative Study; Journal Article; Research Support, N.I.H., Extramural |
Journal Detail:
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Title: Neuron Volume: 63 ISSN: 1097-4199 ISO Abbreviation: Neuron Publication Date: 2009 Aug |
Date Detail:
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Created Date: 2009-08-27 Completed Date: 2009-09-21 Revised Date: 2012-02-28 |
Medline Journal Info:
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Nlm Unique ID: 8809320 Medline TA: Neuron Country: United States |
Other Details:
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Languages: eng Pagination: 523-32 Citation Subset: IM |
Affiliation:
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Department of Anatomy & Neurobiology, Washington University School of Medicine, St. Louis, MO 63110, USA. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Depth Perception / physiology* Eye Movements / physiology* Macaca mulatta Male Motion Perception / physiology* Neurons / physiology* Photic Stimulation / methods* Retina / physiology Temporal Lobe / cytology, physiology Visual Cortex / cytology, physiology* |
| Grant Support | |
ID/Acronym/Agency:
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5-T32-EY13360-07/EY/NEI NIH HHS; EY013644/EY/NEI NIH HHS; EY017866/EY/NEI NIH HHS; P20 RR020151-06A1/RR/NCRR NIH HHS; R01 EY013644-09/EY/NEI NIH HHS; R01 EY017866-03/EY/NEI NIH HHS |
| Comments/Corrections | |
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