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Shows how to use the mouse to control an custom aperture (your own image file) to reveal parts of the stimulus image.

Could be used as a gaze-contingent display or similar

Second try at Farsi/Arabic text display

The Choice Reaction Time Task (Deary & Liewald, 2011)

this is just a test

The Eriksen (1974) flanker task shows the effects of incongruent flanker stimuli on perception of a central target

this is just a test

The classic Stroop task.