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  Similar cortical correlates underlie visual object identification and orientation judgment

Altmann, C., Grodd W, Kourtzi, Z., Bülthoff, H., & Karnath, H.-O. (2005). Similar cortical correlates underlie visual object identification and orientation judgment. Neuropsychologia, 43(14), 2101-2108. doi:doi:10.1016/j.neuropsychologia.2005.03.015.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-D4A7-1 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-D4A8-0
Genre: Journal Article

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Altmann, C1, Author              
Grodd W, Kourtzi, Z1, 2, Author              
Bülthoff, HH1, Author              
Karnath, H-O, Author
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1Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society, escidoc:1497797              
2Department Physiology of Cognitive Processes, Max Planck Institute for Biological Cybernetics, Max Planck Society, escidoc:1497798              

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 Abstract: Visual object perception has been suggested to follow two different routes in the human brain: a ventral, view-invariant occipital–temporal route processes object identity, whereas a dorsal, view-dependent occipital–parietal route processes spatial properties of an object. Using fMRI, we addressed the question whether these routes are exclusively involved in either object recognition or spatial representation. We presented subjects with images of natural objects and involved them either in object identification or object orientation judgment task. For both tasks, we observed activation in ventro-temporal as well as parietal areas bilaterally, with significantly stronger responses for the orientation judgment in both ventro-temporal as well as parietal areas. Our findings suggest that object identification and orientation judgment do not follow strictly separable cortical pathways, but rather involve both the dorsal and the ventral stream.

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 Dates: 2005-08
 Publication Status: Published in print
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 Identifiers: DOI: doi:10.1016/j.neuropsychologia.2005.03.015
BibTex Citekey: 3300
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Title: Neuropsychologia
Source Genre: Journal
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Pages: - Volume / Issue: 43 (14) Sequence Number: - Start / End Page: 2101 - 2108 Identifier: -