Reach for It

This exhibit demonstrates the rapid adaptation that the perceptual system is capable of. The visitor looks through a pair of prism glasses. The prisms shift the visual field to the side. A table in front of the visitor has rods stuck through it. The visitor is instructed to reach under the table for the center rod. Because of the prisms, this will be very difficult at first but will become easier with practice as the eye-brain-muscles adapt to the new situation. If the glasses are removed and the reach for the rods is now attempted, the visitor will have to re-learn the original coordinationt.