A TECHNIQUE FOR DETERMINING AN INDEX OF VISUAL ALERTNESS FROM THE ELECTROENCEPHALOGRAM

Abstract

A technique is described for evaluating the visual alertness of humans. This technique utilizes a transistorized EEG analyzer consisting of an automatic signal level control, a number of paralleled active bandpass filters, and a switching arrangement to allow modification of bandpass characteristics by the user. The output of the analyzer consists of four D.C. signals, the voltage of each being proportional to the EEG activity within the variable frequency bands selected by the experimenter. This evaluation of visual alertness involves monitoring these four analyzer outputs while the subject performs a routine designed to provide alpha suppression.

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Document Details

Document Type
Technical Report
Publication Date
May 23, 1967
Accession Number
AD0653451

Entities

People

  • George E. Bergey
  • Russell D. Squires
  • William A. Hamilton
  • William C. Sipple

Organizations

  • Naval Air Warfare Center Warminster

Tags

Communities of Interest

  • Biomedical
  • Materials and Manufacturing Processes
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Analog Computers
  • Analyzers
  • Automatic
  • Bandpass Filters
  • Biomedical Research
  • Classification
  • Computers
  • Data Processing
  • Filters
  • Frequency
  • Frequency Analyzers
  • Frequency Bands
  • Monitoring
  • Processing Equipment
  • Situational Awareness
  • Switching
  • Test And Evaluation

Readers

  • Brain and Cognitive Science; Experimental Psychology; Cognitive Neuroscience
  • Electrical Engineering
  • Radio communications and signal processing.