| Speed skills: measuring the visual speed analyzing properties of primate MT neurons. | |
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MedLine Citation:
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PMID: 11319562 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Knowing the direction and speed of moving objects is often critical for survival. However, it is poorly understood how cortical neurons process the speed of image movement. Here we tested MT neurons using moving sine-wave gratings of different spatial and temporal frequencies, and mapped out the neurons' spatiotemporal frequency response profiles. The maps typically had oriented ridges of peak sensitivity as expected for speed-tuned neurons. The preferred speed estimate, derived from the orientation of the maps, corresponded well to the preferred speed when moving bars were presented. Thus, our data demonstrate that MT neurons are truly sensitive to the object speed. These findings indicate that MT is not only a key structure in the analysis of direction of motion and depth perception, but also in the analysis of object speed. |
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Authors:
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J A Perrone; A Thiele |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S. |
Journal Detail:
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Title: Nature neuroscience Volume: 4 ISSN: 1097-6256 ISO Abbreviation: Nat. Neurosci. Publication Date: 2001 May |
Date Detail:
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Created Date: 2001-04-25 Completed Date: 2001-05-24 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 9809671 Medline TA: Nat Neurosci Country: United States |
Other Details:
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Languages: eng Pagination: 526-32 Citation Subset: IM |
Affiliation:
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Department of Psychology, The University of Waikato, Hamilton, New Zealand. jpnz@waikato.ac.nz |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Action Potentials
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physiology Algorithms Animals Brain Mapping Data Interpretation, Statistical Electrophysiology Female Form Perception / physiology Macaca mulatta Male Motion Perception / physiology* Neurons / physiology Psychomotor Performance / physiology* Visual Cortex / cytology, physiology* Visual Fields / physiology Visual Perception / physiology* |
| Comments/Corrections | |
Comment In:
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Nat Neurosci. 2001 May;4(5):461-2
[PMID:
11319551
]
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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