Accession Number : ADA219993


Title :   Shape Discrimination Research Using an IBM PC


Descriptive Note : Final rept. Oct 1987-Jul 1989


Corporate Author : DAYTON UNIV OH RESEARCH INST


Personal Author(s) : Voltz, Christopher D ; Geri, George A


Full Text : http://www.dtic.mil/dtic/tr/fulltext/u2/a219993.pdf


Report Date : Mar 1990


Pagination or Media Count : 83


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.


Descriptors :   *COMPUTER PROGRAMS , *DISCRIMINATION , *SHAPE , PARAMETERS , HIGH RESOLUTION , DISPLAY SYSTEMS , RESPONSE , ANALOG SYSTEMS , LABORATORIES , MONITORS , VISION , VISUAL PERCEPTION , STIMULI , PARALLEL ORIENTATION , ADAPTERS , COMPUTERS , AUXILIARY , TEST AND EVALUATION , GRAPHICS


Subject Categories : Computer Programming and Software
      Computer Hardware


Distribution Statement : APPROVED FOR PUBLIC RELEASE