| Comparing segmentation by time and by motion in visual search: an FMRI investigation. | |
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MedLine Citation:
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PMID: 20617891 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Brain activity was recorded while participants engaged in a difficult visual search task for a target defined by the spatial configuration of its component elements. The search displays were segmented by time (a preview then a search display), by motion, or were unsegmented. A preparatory network showed activity to the preview display, in the time but not in the motion segmentation condition. A region of the precuneus showed (i) higher activation when displays were segmented by time or by motion, and (ii) correlated activity with larger segmentation benefits behaviorally, regardless of the cue. Additionally, the results revealed that success in temporal segmentation was correlated with reduced activation in early visual areas, including V1. The results depict partially overlapping brain networks for segmentation in search by time and motion, with both cue-independent and cue-specific mechanisms. |
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Authors:
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Kevin Dent; Harriet Allen; Glyn W Humphreys |
Publication Detail:
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Type: Journal Article Date: 2010-07-09 |
Journal Detail:
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Title: Journal of cognitive neuroscience Volume: 23 ISSN: 1530-8898 ISO Abbreviation: J Cogn Neurosci Publication Date: 2011 Jul |
Date Detail:
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Created Date: 2011-05-10 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8910747 Medline TA: J Cogn Neurosci Country: United States |
Other Details:
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Languages: eng Pagination: 1710-22 Citation Subset: IM |
Affiliation:
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The University of Birmingham. |
Export Citation:
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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