Studies on Dark Adaptation. VIII. The Effects of Pre-Exposure on Several Low-Brightness Tasks.
TUFTS UNIV MEDFORD MASS INST FOR PSYCHOLOGICAL RESEARCH
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The pre-exposure tolerance of the dark-adapted human eye was investigated. The effects were studied of each of the major parameters of preexposure brightness, duration, color, etc. on the absolute threshold of the dark-adapted fovea. The results indicate that the observers ability to resume a low luminance task upon cessation of high illumination would not be appreciably affected, especially when the task is at a luminance significantly above that of the absolute threshold. Author