Simple and powerful visual stimulus generator
We describe a cheap, simple, portable and efficient approach to visual stimulation for neurophysiology which does not need any special hardware equipment. The method based on an animation technique uses the FLI autodesk animator format. This form of the animation is replayed by a special program (player) providing synchronisation pulses toward recording system via parallel port. The player is running on an IBM compatible personal computer under MS-DOS operation system and stimulus is displayed on a VGA computer monitor. Various stimuli created with this technique for visual evoked potentials (VEPs) are presented.
visual stimulus generator veps visual stimuli motion-onset pattern-reversal