On each trial, an image will briefly flash and be immediately followed by a backward mask (shuffled tiles of another image). Then, two candidate images will appear. Choose the option that matches the flashed image (the other option being the unshuffled mask image) using the left and right arrow keys or by tapping directly on touch devices.
The time between the flashed image and the mask (Stimulus Onset Asynchrony, SOA) will vary in 1-frame increments (from ~17ms to ~100ms). Trials are precomputed and the experiment will end after all trials have been completed, but you may stop at any time and download your data.