ViSaGe makes it simple to present calibrated visual stimuli on CRT, LCD, DLP and OLED based displays with precision timing, and provides a robust and reliable mechanism to synchronise the stimulus presentation with external data collection equipment, including button boxes or eye trackers, motion trackers, electrophysiological amplifiers, and MRI scanners. It is the ideal choice for cognitive, psychophysical, and neurophysiological investigations of vision and the brain.