Shape Discrimination Research Using an IBM PC

Abstract

A menu-driven program is described that is designed to control the presentation of visual stimuli and to collect an analyze response data in shape discrimination research. The program presents high resolution stimuli on an IBM PC equipped with an IBM Professional Graphics Adaptor (PGA) and an analog monitor. Bit-plane layering is employed to allow multiple test and adapting stimuli (1- to 2-bit gray scale) to be presented with specifiable interstimulus intervals. The program implements a double-random staircase paradigm, collects a subject's responses via the computer's parallel port, and analyzes the resulting data. In addition, auxiliary programs are provided for generating Fourier Descriptor shape stimuli, for modifying stimulus parameters, and for formatting and storing the final stimuli for use by the main program. Keywords: Display hardware; Laboratory computer software; Visual research.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1990
Accession Number
ADA219993

Entities

People

  • Christopher D. Voltz
  • George A. Geri

Organizations

  • University of Dayton

Tags

Communities of Interest

  • Air Platforms
  • C4I

DTIC Thesaurus Topics

  • Air Force
  • Air Force Facilities
  • Amplitude
  • Computer Graphics
  • Computer Programs
  • Computers
  • Discrimination
  • Flight Simulators
  • Flight Training
  • Governments
  • Graphics
  • Image Processing
  • Parallel Ports
  • Personal Computers
  • Plastic Explosives
  • Specifications
  • Training

Readers

  • Brain and Cognitive Science; Experimental Psychology; Cognitive Neuroscience
  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Computer Vision.