Visual motion aftereffect
Instructions: Stare at the black dot and don't move your eyes! When the dot disappears, the next stimulus ("test stimulus") should appear to move opposite the direction of the previous motion.
Now try adapting to the other direction of motion--the same test stimulus will appear to go the other way!
You can see the test stimulus alone--it is an ambiguous stimulus. You can see it going either up or down!
Crossmodal Motion Aftereffects
In our recent study, we found that adapting to visual motion can lead to an illusion of motion along the finger tip. And, adapting to motion along the fingertip can lead to a visual motion aftereffect as well!
The tactile device is an array of 6x10 "tactors" arranged in an array just over 1 sq. cm, allowing for 60 points of stimulation on your fingertip. Each tactor deflects laterally along the skin surface. This clip is for demo purposes, so you can get a (visual) idea of what the tactile stimulation felt like. You can learn more about the device, and see videos of it in action here.