Accession Number:
AD0271801
Title:
Studies on Dark Adaptation. VIII. The Effects of Pre-Exposure on Several Low-Brightness Tasks.
Descriptive Note:
Corporate Author:
TUFTS UNIV MEDFORD MASS INST FOR PSYCHOLOGICAL RESEARCH
Personal Author(s):
Report Date:
1961-12-01
Pagination or Media Count:
1.0
Abstract:
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