Instrumentation for Presenting a Known Standard Signal to the GSR Channel for Assessing Response Characteristic of Selected Polygraph Instruments.

Abstract

Anecdotal evidence suggested that signals recorded using computerized polygraph instruments with the galvanic skin response (GSR) channel set in the manual mode are substantially different from those recorded with the instrument set in the automatic mode. This had been difficult to confirm since equipment was not available that would generate continuously variable resistance signals of known shape, magnitude, and frequency. Such a device was conceptualized, designed, constructed, tested, and aligned in the laboratory using readily available electronic components. The response characteristics of various computerized polygraph instruments were subsequently analyzed using the device. Results confirmed the verbal reports of differences between signal characteristics in the manual and automatic modes.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1997
Accession Number
ADA330186

Entities

People

  • Victor L. Cestaro

Organizations

  • United States Department of Defense

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Amplifiers
  • Automatic
  • Computers
  • Data Acquisition
  • Department Of Defense
  • Digital Information
  • Electronic Components
  • Frequency
  • Instrumentation
  • Light Sources
  • Resistance
  • Simulators
  • Sine Waves
  • Square Waves
  • Standards
  • Waveforms
  • Waves

Readers

  • Aerospace Test and Evaluation
  • Brain and Cognitive Science; Experimental Psychology; Cognitive Neuroscience

Technology Areas

  • Microelectronics
  • Microelectronics - Microelectromechanical Systems