We don't often think of touch as being a vital part of movement, but touch is one part of a network that oversees all the sensations arising from the surface and interior of our bodies. Touch, pain, temperature, and our spatial awareness...

Ouch! That hurt! When your baby brother bites your finger, how do you feel it? How do you know whatês hot or whatês cold? How can you tell if something is soft or scratchy or damp? Most of all, how do we feel pain? Weêre talking about...