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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 52, Iss. 8 — Aug. 1, 1962
  • pp: 931–933

Effects of Acceleration on Brightness Discrimination

MYRON L. BRAUNSTEIN and WILLIAM J. WHITE  »View Author Affiliations


JOSA, Vol. 52, Issue 8, pp. 931-933 (1962)
http://dx.doi.org/10.1364/JOSA.52.000931


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Abstract

Brightness discrimination thresholds were determined at positive acceleration levels of 1, 2, 3, and 5<i>g</i> and transverse acceleration levels of 1, 2, 3, 5, and 7<i>g</i>. Four background luminance-levels, ranging from 0.03 to 31 ft-L, were studied. Contrast required to detect an increment in illumination increased with acceleration. This increase was present for both directions of acceleration and for all background levels, but was most marked for positive acceleration, and for the dimmest background. At 0.03 ft-L, 16% contrast was required to detect a target at 5<i>g</i> positive, as compared to 9% at 1g.

Citation
MYRON L. BRAUNSTEIN and WILLIAM J. WHITE, "Effects of Acceleration on Brightness Discrimination," J. Opt. Soc. Am. 52, 931-933 (1962)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-52-8-931


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References

  1. W. J. White, Gravitational Stress in Aerospace Medicine, edited by O. H. Gauer and G. D. Zuidema (Little Brown and Co., Boston, 1961), pp. 70–89.
  2. W. J. White and W. R. Jorve, "The effects of gravitational stress upon visual acuity," Tech. Rep. 56–247, Wright Air Development Center, Dayton, Ohio (1956).
  3. W. J. White, "Variations in absolute visual thresholds during acceleration stress," Tech. Rep. 60–34, Wright Air Development Division, Dayton, Ohio (1960).
  4. P. K. Isakov, Voyenno-meditis. Zhur. 6, 65 (1957).
  5. E. H. Wood, W. F. Sutterer, and H. W. Marshall, "Effect of headward and forward acceleration on the cardiovascular system," Tech. Rep. 60–634, Wright Air Development Division, Dayton, Ohio (1961).
  6. O. H. Gauer and S. Bondurant, Gravitational Stress in Aerospace Medicine, edited by O. H. Gauer and G. D. Zuidema (Little Brown and Co., Boston, 1961), pp. 61–69.
  7. M. L. Braunstein and W. J. White, "The effects of acceleration on visual brightness discrimination," Rept. No. OM-1570-G-1, Cornell Aeronautical Laboratory, Buffalo, New York (1961).

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