Attention anomalies as measured by time estimation under G stress
Repperger, D.W.; Frazier, J.W.; Popper, S.; Goodyear, C.
Aerospace and Electronics Conference, 1989. NAECON 1989., Proceedings of the IEEE 1989 National
Volume , Issue , 22-26 May 1989 Page(s):787 - 793 vol.2
Digital Object Identifier 10.1109/NAECON.1989.40302
Summary:To investigate attention anomalies under G stress,
performance tests involving the estimation of time duration were
conducted at sustained levels of 1 Gz, 3 G
z, 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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