Cerebral Hemodynamics and Vigilance Performance

Abstract

Five studies are described using transcranial Doppler sonography (TCD) and near-infrared spectroscopy (NIRS) to examine brain systems in vigilance. The results indicate that the vigilance decrement, the temporal decline that typifies vigilance performance, is paralleled by a decline in cerebral blood flow velocity as indexed by TCD. In addition, both measures showed greater activity in the right than in the left cerebral hemisphere in response to a variety of psychophysical challenges, indicating a right hemispheric system in control of vigilance performance. The TCD measure was also found to be potentially useful in selecting observers for vigilance assignments.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2009
Accession Number
ADA513684

Entities

People

  • Gerald Matthews
  • Joel S. Warm
  • Raja Parasuraman

Tags

Communities of Interest

  • Biomedical

DTIC Thesaurus Topics

  • Air Force Research Laboratories
  • Air Traffic
  • Arteries
  • Blood
  • Blood Flow
  • Brain
  • Cardiovascular Physiological Phenomena
  • Cognitive Workload
  • Detection
  • Human Factors Engineering
  • Imaging Techniques
  • Information Processing
  • Infrared Spectroscopy
  • Neuroimaging
  • Neurosciences
  • Oxygenation
  • Psychology

Fields of Study

  • Psychology

Readers

  • Brain and Cognitive Science; Experimental Psychology; Cognitive Neuroscience
  • Medical Imaging.