Studies on Dark Adaptation. VIII. The Effects of Pre-Exposure on Several Low-Brightness Tasks.

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 observer's 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)

Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1961
Accession Number
AD0271801

Entities

People

  • Edythe M.s. Anderson
  • John A. Hanson

Organizations

  • Tufts University

Tags

DTIC Thesaurus Topics

  • Brightness
  • Illumination
  • Luminance
  • Optical Phenomena

Readers

  • Brain and Cognitive Science; Experimental Psychology; Cognitive Neuroscience
  • Vision Science/Vision Psychology/Cognitive Neuroscience.