Motion aftereffect demonstration

I'm passing this on, a rather powerful (practically hallucinatory) demonstration. Look at the center of the moving lines for 20 seconds and then at a picture on the wall. DO NOT TRY THIS IF YOU HAVE PHOTOSENSITIVE EPILEPSY!

from Deric's MindBlog https://ift.tt/2UKlynl
via https://ifttt.com/ IFTTT