The abbreviated vigilance task and cerebral hemodynamics

    Authors

    W. S. Helton; T. D. Hollander; J. S. Warm; L. D. Tripp; K. Parsons; G. Matthews; W. N. Dember; R. Parasuraman;P. A. Hancock

    Comments

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    Abbreviated Journal Title

    J. Clin. Exp. Neuropsychol.

    Keywords

    TRANSCRANIAL DOPPLER ULTRASONOGRAPHY; NEAR-INFRARED SPECTROSCOPY; BLOOD-FLOW VELOCITY; SUSTAINED ATTENTION; COGNITIVE TASKS; PERFORMANCE; BRAIN; WORKLOAD; ASYMMETRY; FEEDBACK; Psychology, Clinical; Clinical Neurology; Psychology

    Abstract

    Transcranial Doppler sonography (TCD) and transcranial cerebral oximetry (TCCO) measures of cerebral blood flow velocity and oxygenation levels were collected during an abbreviated 12-min vigilance task. Both the TCD and TCCO measures showed higher levels of cerebral vascular activity in the right than in the left cerebral hemisphere; the cerebral laterality of vigilance occurs in an abbreviated task. Although there was a significant decline in performance over time, there was no significant change in the physiological measures over time during the abbreviated vigil. This latter finding does not match the physiological changes detected in long-duration vigils.

    Journal Title

    Journal of Clinical and Experimental Neuropsychology

    Volume

    29

    Issue/Number

    5

    Publication Date

    1-1-2007

    Document Type

    Article

    Language

    English

    First Page

    545

    Last Page

    552

    WOS Identifier

    WOS:000247727800009

    ISSN

    1380-3395

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