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A multichannel PC tachistoscope with high resolution and fast display change capability
1Laboratory for Cognitive Neuropsychology, National Yang-Ming University, Pei-Tou, Taipei 112, Taiwan. jerry@daisy.ym.edu.tw
Behavior Research Methods, Instruments, & Computers : a Journal of the Psychonomic Society, Inc
|January 31, 2002
Summary
This study introduces a new PC tachistoscope library that enhances display quality and image switching speed. It enables rapid, high-resolution stimulus presentation for psychological research.
Area of Science:
- Psychology
- Computer Science
- Visual Perception
Background:
- Previous PC tachistoscopes had limitations in display quality and image switching speed.
- Advancements in display technology have not always translated to improved tachistoscope performance.
Purpose of the Study:
- To demonstrate the capability of VESA's VBE 3.0 standard for enhancing PC tachistoscopes.
- To develop a PC tachistoscope system with increased channels, higher image quality, and faster display switching.
Main Methods:
- Utilized VESA's VBE 3.0 standard for improved display capabilities.
- Developed a C-based PCTSCOPE library compatible with DOS real mode.
- Configured high refresh rates (up to 180 Hz) and resolutions (e.g., 640x480 with 256 colors).
Main Results:
- Achieved a significant increase in the number of display channels.
- Enabled high-quality image presentation with reduced timing delays.
- Demonstrated display switching in less than 6 msec, synchronized with video scanning frames.
Conclusions:
- The developed PCTSCOPE library significantly improves PC tachistoscope performance.
- This enhanced system is ideal for research demanding high-fidelity images and rapid stimulus sequencing.
- The VESA VBE 3.0 standard offers a viable solution for upgrading tachistoscope technology.
