| Interactions between systemic hemodynamics and cerebral blood flow during attentional processing. | |
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MedLine Citation:
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PMID: 20409013 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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The study explored interactions between systemic hemodynamics and cerebral blood flow during attentional processing. Using transcranial Doppler sonography, blood flow velocities in the middle cerebral arteries (MCA) of both hemispheres were recorded while 50 subjects performed a cued reaction time task. Finger arterial pressure and heart rate were also continuously monitored. Doppler sonography revealed a right dominant blood flow response. The extent of the increase measured in second two of the interstimulus interval showed a clear positive association with reaction speed. Task-related changes in blood pressure and heart rate proved predictive of changes in MCA flow velocities in limited time windows of the response. Besides an association between cerebral blood flow and attentional performance, the results suggest a marked impact of systemic hemodynamics on the blood flow response. All observed interactions are highly dynamic in time. |
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Authors:
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Stefan Duschek; Heike Heiss; Marco F H Schmidt; Natalie S Werner; Daniel Schuepbach |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Psychophysiology Volume: 47 ISSN: 1540-5958 ISO Abbreviation: Psychophysiology Publication Date: 2010 Nov |
Date Detail:
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Created Date: 2010-11-02 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0142657 Medline TA: Psychophysiology Country: United States |
Other Details:
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Languages: eng Pagination: 1159-66 Citation Subset: IM |
Copyright Information:
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Copyright © 2010 Society for Psychophysiological Research. |
Affiliation:
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Department of Psychology, University of Munich, Munich, Germany. stefan.duschek@psy.lmu.de |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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