Result: Millisecond accuracy video display using OpenGL under Linux
Title:
Millisecond accuracy video display using OpenGL under Linux
Authors:
Source:
Behavior research methods. 38(1):142-145
Publisher Information:
Austin, TX: Psychonomic Society, 2006.
Publication Year:
2006
Physical Description:
print, 11 ref
Original Material:
INIST-CNRS
Subject Terms:
Psychophysiology, Psychophysiologie, Psychology, psychopathology, psychiatry, Psychologie, psychopathologie, psychiatrie, Sciences biologiques et medicales, Biological and medical sciences, Sciences biologiques fondamentales et appliquees. Psychologie, Fundamental and applied biological sciences. Psychology, Psychologie. Psychophysiologie, Psychology. Psychophysiology, Psychométrie. Statistique. Méthodologie, Psychometrics. Statistics. Methodology, Traitement informatique, Computer processing, Psychologie. Psychanalyse. Psychiatrie, Psychology. Psychoanalysis. Psychiatry, Equipement entrée sortie, Input output equipment, Equipo entrada salida, Matériel informatique, Computer hardware, Hardware, Affichage, Display, Visualización, Analyse temporelle, Time analysis, Análisis temporal, Ecran visualisation, Display screen, Pantalla visualización, Ordinateur, Computer, Computadora, Temps réaction, Reaction time, Tiempo reacción, Linux
Document Type:
Academic journal
Article
File Description:
text
Language:
English
Author Affiliations:
University of Warwick, Coventry, England, United Kingdom
ISSN:
1554-351X
Rights:
Copyright 2007 INIST-CNRS
CC BY 4.0
Sauf mention contraire ci-dessus, le contenu de cette notice bibliographique peut être utilisé dans le cadre d’une licence CC BY 4.0 Inist-CNRS / Unless otherwise stated above, the content of this bibliographic record may be used under a CC BY 4.0 licence by Inist-CNRS / A menos que se haya señalado antes, el contenido de este registro bibliográfico puede ser utilizado al amparo de una licencia CC BY 4.0 Inist-CNRS
CC BY 4.0
Sauf mention contraire ci-dessus, le contenu de cette notice bibliographique peut être utilisé dans le cadre d’une licence CC BY 4.0 Inist-CNRS / Unless otherwise stated above, the content of this bibliographic record may be used under a CC BY 4.0 licence by Inist-CNRS / A menos que se haya señalado antes, el contenido de este registro bibliográfico puede ser utilizado al amparo de una licencia CC BY 4.0 Inist-CNRS
Notes:
Psychology. Ethology
FRANCIS
FRANCIS
Accession Number:
edscal.17848800
Database:
PASCAL Archive
Further Information
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.