Title

The abbreviated vigilance task and cerebral hemodynamics

Authors

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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