Motion aftereffect. Click on your web browser's "RELOAD" button to replay the movie. Directions: Start the movie, and keep steady fixation on the small square. After the rings stop moving, hold fixation, and note that the rings now appear to move in the opposite direction. Try it again, but this time, when the rings stop moving, look at something else. Text and faces are especially weird.
Responses of a direction-selective neuron to a variety of stimuli.
A simple circuit to make a direction-selective receptor.
... and its responses to two directions of motion
Responses of a direction-selective neuron to a variety of directions of motion.
Making a simple plaid pattern from 2 separate gratings.
