SENSITIVITY OF THE VISUAL SYSTEM TO CHANGES IN THE RATE OF INTERMITTENCE,

Abstract

Experimentation is reported that concerned the relative judgment of frequency of visual flicker. This was the result of investigation into the number of absolutely identifiable steps, difference-limens, or 'just noticeable differences' in such visual scales as size, brightness, hue, or flicker, all being part of the desire to assess the usefulness of visual stimuli for coding information in an electronic data display system. Data were obtained from 3 kinds of photic experiments: frequency matching of 2 pulse trains by the method of adjustment, the method of single stimuli, and perceiving a gap in a pulse train. Determinations were also made of difference-limens for the rate of intermittent electrical phosphenes and for rate discrimination in audition and touch.

Document Details

Document Type
Technical Report
Publication Date
Mar 10, 1958
Accession Number
AD0626614

Entities

People

  • G. H. Mowbray
  • J. W. Gebhard

Organizations

  • Johns Hopkins University Applied Physics Laboratory

Tags

DTIC Thesaurus Topics

  • Brightness
  • Data Displays
  • Discrimination
  • Display Systems
  • Frequency
  • Judgment
  • Sensitivity

Fields of Study

  • Psychology

Readers

  • Systems Analysis and Design
  • Vision Science/Vision Psychology/Cognitive Neuroscience.

Technology Areas

  • Microelectronics