Recently, BrainCraft did a great video on ticklishness, which you can check out below. Tickling isn’t usually the first thing with think of when we consider the neurobiology of touch, but how it works and why it came to be are intriguing areas of research.

Also, check out this Fresh Air interview with Dr. David Linden, author of Touch: the science of hand, heart, and mind to get a fascinating description of this sense’s various dimensions.