LUMINANCE THRESHOLDS DURING DARK ADAPTATION FOLLOWING PREADAPTATION TO CATHODE RAY TUBE DISPLAYS

Abstract

The luminance thresholds were measured following preadaptation to CRT displays, which consisted of a vertical trace line moving horizontally across the screen at 1, 30, or 60 times/sec. The thresholds were determined during different stages of dark adaptation by the identification of the position of a luminous dial pointer. The initial thresholds were relatively low (-2.0 lg mL), and dark adaptation was complete in about 5 min. Viewing CRT displays resulted in a temporary detrimental effect upon the visual efficiency of aircraft personnel and there by impaired their ability to read instrument dials and perceive objects external to the aircraft.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1952
Accession Number
AD0018118

Entities

People

  • A. Leonard Diamond
  • Margaret P. Kuhns
  • Robert M. Herrick

Organizations

  • Columbia University

Tags

Communities of Interest

  • Biomedical

DTIC Thesaurus Topics

  • Air Force
  • Air Force Facilities
  • Aircrafts
  • Buildings And Structures
  • Cathode Ray Tubes
  • Color Temperature
  • Control Systems
  • Identification
  • Instrument Dials
  • Intervals
  • Light Sources
  • Luminance
  • Measurement
  • Medical Laboratories
  • Observers
  • Schematic Diagrams
  • Visual Acuity

Readers

  • Auditory Neuroscience/Auditory Physiology.
  • Human-Computer Interaction (HCI).
  • Team-Based Human-Centered Cognitive Task Decision Making and Information Performance.