Accession Number : ADP006099

Title :   EEG Indices of G-Induced Loss of Consciousness (G-LOC),

Corporate Author : SCHOOL OF AEROSPACE MEDICINE BROOKS AFB TX

Personal Author(s) : Lewis, Nita G. ; McGovern, Jennifer B. ; Miller, James C. ; Eddy, Douglas R. ; Forster, Estrella M.

Report Date : FEB 1988

Pagination or Media Count : 12

Abstract : To investigate the utility of the electroencephalogram (EEG) as an indicator of state of consciousness, we recorded human brain activity during exposure to rapid onset (6 G/sec) centrifugation (+7G). Eight healthy volunteers (mean age 31 years + or - 7.65) were given at least two sessions of sustained acceleration (+7Gz) on the USAFSAM human centrifuge. The sessions were conducted without G-suits and subjects were instructed to relax and not attempt anti-G straining maneuvers. Six subjects each experienced two episodes of experienced visual blackout once. One subject remained conscious but experienced visual greyout in both sessions. (js)

Descriptors :   *CONSCIOUSNESS, ACCELERATION, BLACKOUT(PROPAGATION), BRAIN, CENTRIFUGES, ELECTROENCEPHALOGRAPHY, HUMANS, INDEXES, VISION.

Subject Categories : Psychology

Distribution Statement : APPROVED FOR PUBLIC RELEASE