Attention anomalies as measured by time estimation under G stress
Repperger, D.W.
Frazier, J.W.
Popper, S.
Goodyear, C.
Harry G. Armstrong Aerosp. Med. Res. Lab., Wright-Patterson AFB, OH;
This paper appears in: Aerospace and Electronics Conference, 1989. NAECON 1989., Proceedings of the IEEE 1989 National
Publication Date: 22-26 May 1989
On page(s): 787-793 vol.2
Meeting Date: 05/22/1989 - 05/26/1989
Location: Dayton, OH, USA
References Cited: 23
INSPEC Accession Number: 3505992
Digital Object Identifier: 10.1109/NAECON.1989.40302
Current Version Published: 2002-08-06
Abstract
To investigate attention anomalies under G stress,
performance tests involving the estimation of time duration were
conducted at sustained levels of 1 Gz, 3 Gz, and 5 Gz stress for a duration of 60.
Two types of time-estimation tasks were conducted, counting and
noncounting. Analysis of these data across all subjects indicates that
the estimation of the minimum-duration counting task was grossly
underestimated. Data were first analyzed across all subjects, and only
the shortest counting task was affected by the 5 Gz
stress condition. Overall, however, for a given stress level, the
counting task was much more accurate a method of estimating time than
noncounting. The 5 Gz stress level was slightly
below the threshold to affect performance; however, for the documented
case of one subject under great mental stress, his results were
significantly affected by the combination of 5 Gz
stress and the psychological stress. This effort has identified the 5
Gz stressor as the level at which performance begins
to degrade, subject to the level of mental stress experienced by the
subject
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