THE EFFECTS OF HYPOXIA ON SERIAL RESPONSE TIME

Authors
  1. Fowler, B.
  2. White, P.L.
Corporate Authors
Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN);York Univ, Toronto ONT (CAN) Dept of Psychology
Abstract
The effects of hypoxia were investigated using a serial response time task where number of choices, movement distance and stimulus brightness were varied. Hypoxia was induced with a low percentage oxygen mixture and blood oxygen saturation was controlled at 64.3%, equivalent to 6700m. Hypoxia increased response latency more under low than high stimulus brightness, added a constant to the function representing number of choices but increased the slope of the movement distance function. These results were interpreted as pointing to hypoxia increasing simple reaction time by decreasing the effective brightness of the stimulus and interfering with some aspect of the information processing system controlling movement time. Error rate was increased slightly and the pattern of latency around an error led to the suggestion that increased error rates with hypoxia may reflect shifts in the speed-accuracy operating characteristics.
Report Number
81-P-08 —
Date of publication
01 Jan 1982
Number of Pages
13
Reprinted from
Ergonomics, vol 25, no 3, 1982, p 189-201
DSTKIM No
83-00324
CANDIS No
38475
Format(s):
Hardcopy;Originator's fiche received by DSIS

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