How Do We Feel?

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 touch. Alie Astrocyte feels her way through the somatosensory system and explores the neuroscience behind touch.