From bonobos and rats to tickling robots, research is finally cracking the secrets of why we’re ticklish, and what that reveals about our brains ...

People vary in how sensitive they are to tickling. Some people are only ticklish sometimes, while others are not ticklish at all. Tickling can be a fun game, a temporary annoyance, or a deeply ...

The mere mention of the word “tickle” can elicit a variety of reactions. For one person, tickling can represent play, while it can be the source of a sexual response for another, and for some, it has ...