Effects of hypoxia on peripheral visual response to dim stimuli.

Perceptual and Motor Skills
J L Kobrick

Abstract

Response times (RTs) of 9 Ss were obtained for detection of 48 flash stimuli distributed throughout the visual field during 3 1/4-hr. exposures to each of 4 hypoxia conditions (0, 13,000, 15,000, 17,000 feet equivalent elevation). The luminances of all stimuli were set in common at the detection threshold value for the visual periphery. RTs were impaired in direct relation to hypoxic exposure severity, the peak impairments occurring within 90 min. followed by gradual recovery. Since the present results showed less impairment than previous data for brighter stimuli using the same task, it is concluded that stimulus contrast is more critical to peripheral signal detection than absolute stimulus luminance, particularly under hypoxic exposure.

References

Jul 1, 1974·Journal of Applied Physiology·J L Kobrick
Sep 1, 1971·Journal of Applied Physiology·J L Kobrick, B Appleton
Oct 1, 1970·Journal of Applied Physiology·J L Kobrick, E R Dusek
Feb 1, 1970·Perceptual and Motor Skills·J L Kobrick, W R Sutton
May 20, 1940·The Journal of General Physiology·R A McFarland, M H Halperin
May 1, 1946·The Journal of General Physiology·S HECHT, C D HENDLEY

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Citations

Jun 16, 2010·European Journal of Applied Physiology·Masako HoshikawaRika Ide
May 1, 1995·Electroencephalography and Clinical Neurophysiology·H OzakiH Suzuki
Aug 11, 1999·International Journal of Occupational and Environmental Health·J B West
Aug 7, 2002·High Altitude Medicine & Biology·John B West
Apr 7, 2011·Journal of the Royal Army Medical Corps·P D Hodkinson

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