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Millisecond accuracy video display using OpenGL under Linux
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Stewart, Neil (2006) Millisecond accuracy video display using OpenGL under Linux. Behavior Research Methods, Vol.38 (No.1). pp. 142-145. doi:10.3758/BF03192759 ISSN 1554-351X.
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Official URL: http://dx.doi.org/10.3758/BF03192759
Abstract
To measure people’s reaction times to the nearest millisecond, it is necessary to know exactly when
a stimulus is displayed. This article describes how to display stimuli with millisecond accuracy on a
normal CRT monitor, using a PC running Linux. A simple C program is presented to illustrate how this
may be done within X Windows using the OpenGL rendering system. A test of this system is reported
that demonstrates that stimuli may be consistently displayed with millisecond accuracy. An algorithm
is presented that allows the exact time of stimulus presentation to be deduced, even if there are relatively
large errors in measuring the display time.
Item Type: | Journal Article | ||||
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Subjects: | B Philosophy. Psychology. Religion > BF Psychology Q Science > QA Mathematics > QA76 Electronic computers. Computer science. Computer software |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Psychology | ||||
Library of Congress Subject Headings (LCSH): | Psychology -- Computer simulation, Linux, OpenGL, Psychological apperatus, Psychology, Experimental | ||||
Journal or Publication Title: | Behavior Research Methods | ||||
Publisher: | Psychonomic Society, Inc. | ||||
ISSN: | 1554-351X | ||||
Official Date: | February 2006 | ||||
Dates: |
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Volume: | Vol.38 | ||||
Number: | No.1 | ||||
Page Range: | pp. 142-145 | ||||
DOI: | 10.3758/BF03192759 | ||||
Status: | Peer Reviewed | ||||
Access rights to Published version: | Open Access (Creative Commons) |
Data sourced from Thomson Reuters' Web of Knowledge
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