Enabling High Grayscale Resolution Displays and Accurate Response Time Measurements on Conventional Computers

JoVE 3312 2/29/2012

Xiangrui Li¹, Zhong-Lin Lu^2,3,4,5

¹Center for Cognitive and Behavioral Brain Imaging, The Ohio State University, ²Department of Psychology, University of Southern California, ³Biomedical Engineering, University of Southern California, ⁴Neuroscience Graduate Program, University of Southern California, ⁵Department of Psychology, The Ohio State University

Conventional computer hardware can not generate visual stimuli with sufficiently high grayscale resolution and measure response times with sufficient accuracy. We describe how to use the VideoSwitcher to produce high-resolution monochromatic displays, and the RTbox to measure response times with high accuracy on conventional computer hardware.