THE EFFECTS OF HYPOXIA ON REACTION TIME AND MOVEMENT TIME COMPONENTS OF A PERCEPTUAL-MOTOR TASK

Authors
  1. Fowler, B.
  2. Taylor, M.
  3. Porlier, G.
Corporate Authors
Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN);York Univ, Downsview ONT (CAN) Dept of Physical Education;York Univ, Toronto ONT (CAN) Dept of Psychology
Abstract
It has previously been demonstrated that hypoxia disrupts performance on a visual SCRT (serial choice response time) task. Two experiments were conducted to examine further the nature of this disruption. Hypoxia was induced with low-oxygen mixtures and Sa02 (arterial oxyhaemoglobin saturation) was held at a level equivalent to an altitude of approximately 4700m. In experiment 1, choice reaction time was measured with a version of the SCRT task that eliminated movement time. Hypoxia increased the intercept but not the slope of the Hick-Hyman function. In experiment 2, movement time was measured with a reciprocal tapping task. Hypoxia increased not only the slope of Fitts' function but also the slopes produced when target width and movement amplitude were analysed separately. In both experiments the error rate was held constant. These results indicate that hypoxia disrupts the reaction time and movement time components of SCRT performance. TRUNCATED
Report Number
DCIEM-87-P-26 — Research Paper; Reprint
Date of publication
01 Jan 1987
Number of Pages
11
Reprinted from
Ergonomics, vol 30, no 10, 1987, p 1475-1485
DSTKIM No
88-01889
CANDIS No
55119
Format(s):
Microfiche filmed at DSIS;Originator's fiche received by DSIS;Hardcopy

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