THE THRESHOLD FOR HYPOXIA EFFECTS ON PERCEPTUAL-MOTOR PERFORMANCE

Authors
  1. Fowler, B.
  2. Elcombe, D.D.
  3. Kelso, B.
  4. Porlier, G.
Corporate Authors
Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN);York Univ, Toronto ONT (CAN)
Abstract
The minimum altitude at which perceptual-motor decrements due to hypoxia can be detected is a controversial issue having implications for flying safety. The hypoxia threshold for a decrement in perceptual-motor performance was determined with six subjects using a serial choice response time task at two levels of stimulus brightness. Low-oxygen mixtures were used to reduce SaO2 to hypoxic levels ranging from 86% to 76% in steps of 2%. These values correspond to altitudes ranging from 8900 ft to 11,400 feet. Response time was slowed in a dose-dependent manner with a significant effect becoming apparent at an SaO2 of 82% (10,000 feet).
Report Number
DCIEM-86-P-14 — Reprint
Date of publication
01 Jan 1987
Number of Pages
6
Reprinted from
Human Factors, vol 29, no 1, 1987, p 61-66
DSTKIM No
87-03502
CANDIS No
52293
Format(s):
Hardcopy;Originator's fiche received by DSIS

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