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Related Experiment Videos

Millisecond timing on PCs and Macs.

W J MacInnes1, T L Taylor

  • 1Department of Psychology, Dalhousie University, Halifax, NS B3H 4J1, Canada. macinnwj@cs.dal.ca

Behavior Research Methods, Instruments, & Computers : a Journal of the Psychonomic Society, Inc
|July 13, 2001
PubMed
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This study presents a C++ program for real-time stimulus display across multiple operating systems. It ensures accurate timing for experiments, highlighting multitasking environments capable of real-time performance.

Area of Science:

  • Computer Science
  • Experimental Psychology
  • Software Engineering

Background:

  • Accurate stimulus presentation is crucial for cognitive and behavioral research.
  • Existing software solutions often face challenges with real-time display timing across different operating systems.
  • Multitasking operating systems can introduce timing uncertainties in experimental paradigms.

Purpose of the Study:

  • To introduce an object-oriented, real-time solution for stimulus display.
  • To evaluate the real-time capabilities of the developed program on various platforms.
  • To provide researchers with a tool for programming and testing real-time experiments.

Main Methods:

  • Developed a C++ program utilizing a custom window class (GLWindow) and OpenGL.

Related Experiment Videos

  • Implemented 32-bit graphics acceleration for enhanced performance.
  • Replaced default window code with the custom GLWindow to minimize display timing uncertainty.
  • Conducted real-time capability tests on PC and Mac platforms across different operating systems.

    • Main Results:

    • The developed program demonstrates real-time stimulus display capabilities on Windows, MacOS, and Linux.
    • Tests confirmed the feasibility of achieving real-time performance in many multitasking environments.
    • Identified specific system configurations and conditions where real-time performance may be compromised.

    Conclusions:

    • The presented software offers a reliable solution for real-time stimulus presentation in research settings.
    • Researchers can leverage this program to conduct accurate experiments and assess system performance.
    • The findings emphasize the importance of careful system selection and testing for real-time experimental applications.