Psychtoolbox Wiki: Psychtoolbox-3Psychtoolbox-3 Psychophysics Toolbox Version 3 (PTB-3) is a free set of Matlab functions for vision research. It makes it easy to synthesize and show accurately controlled visual stimuli and interact with the observer. It has at least seven thousand active users (see Overview), an active forum, and is highly cited. PTB-3 is based on the Psychophysics Toolbox Version 2 (PTB-2) but its Matlab exten
