Accession Number : ADP006093

Title :   Neurophysiological Patterns of Operational Fatigue: Preliminary Results,

Corporate Author : EEG SYSTEMS LAB SAN FRANCISCO CA

Personal Author(s) : Gevine, A. S. ; Cutillo, B. A. ; Fowler-White, R. M. ; Illes, J. ; Bressler, S. L.

Report Date : FEB 1988

Pagination or Media Count : 9

Abstract : Impaired behavior consequent to prolonged mental work is commonly attributed to the effects of fatigue on higher cognitive functions rather than to changes in rote perceptuomotor or motor functions. A deeper understanding of these effects awaits better knowledge of the underlying neurophysiological mechanisms. Here we make a modest contribution toward this end with a study of event-related, spatiotemporal neuroelectric patterns of five U.S. Air Force test pilots performing a high-load visuomotor monitoring task while alert, becoming fatigued, and fully fatigued. The preliminary results suggest that although neural systems responsible for primary visual stimulus processing remain relatively unaffected, cortical associative areas implicated in task-specific response inhibition are affected even during early stages of fatigue. With further research, it may be possible to design on-line devices for predicting ''transient'' cognitive lapses'' and performance decrements resulting from operational fatigue. (js)

Descriptors :   *MOTOR REACTIONS, AIR FORCE PERSONNEL, AIR FORCE RESEARCH, COGNITION, DEGRADATION, FATIGUE, FUNCTIONS, IMAGE PROCESSING, MENTAL ABILITY, NERVOUS SYSTEM, NEUROPHYSIOLOGY, ONLINE SYSTEMS, PATTERNS, PILOTS, STIMULI, VISUAL PERCEPTION.

Subject Categories : Psychology

Distribution Statement : APPROVED FOR PUBLIC RELEASE