Mike and Motion Perception Catching a ball involves calculating an array of rapidly changing bits of visual information, including the ball’s location, speed, and trajectory. Mike was especially appreciative of his newly regained motion perception. As Mike wrote in his journal, “Top on my list is being able to catch a ball in the air. This is pretty hard to do if you are totally blind, and now I can play ball with my boys and catch the ball 80 percent of the time it is thrown to me. I have spent half my life chasing a ball around in one way or another, so this is a big deal.”

Florence Low