| Effects of regular or irregular event schedules on cerebral hemovelocity during a sustained attention task. | |
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MedLine Citation:
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PMID: 22053921 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Transcranial Doppler sonography was used to measure bilateral cerebral blood flow velocity during sustained attention task performance where the background event schedule occurred in a synchronous (temporally regular) or asynchronous (temporally irregular) manner. Perceptual sensitivity was greater in the synchronous case and declined over time in both conditions. Blood flow velocity was greater in the more difficult asynchronous condition and declined over time in both conditions in the right hemisphere, but the decline in blood flow velocity was limited to the asynchronous condition in the left hemisphere. The results are interpreted in terms of a resource model of sustained attention. Supported in part by a contract from the US Army Medical Research and Materiel Command, Military Operational Medicine Research Program (Contract W23RYX3106-N605), Diagnostic Methods for Predicting Performance Impairment Associated with Combat Stress. |
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Authors:
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Tyler Shaw; Victor Finomore; Joel Warm; Gerald Matthews |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-11-7 |
Journal Detail:
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Title: Journal of clinical and experimental neuropsychology Volume: - ISSN: 1744-411X ISO Abbreviation: - Publication Date: 2011 Nov |
Date Detail:
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Created Date: 2011-11-7 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8502170 Medline TA: J Clin Exp Neuropsychol Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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a Human Factors and Applied Cognition, George Mason University , Fairfax , VA , USA. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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