One study found that rats emitted ultrasonic vocalizations when they were subjected to manual somatosensory stimulation, i.e., tickling. The results of this controversial research were published in ...

Whether it's your armpits, ribs or soles of your feet, the experience of ticklishness is common to almost every person on Earth. Subscribe to our newsletter for the latest sci-tech news updates.

Socrates wondered 2,000 years ago, and Charles Darwin also racked his brains: what is a tickle, and why are we so sensitive to tickling? ‘Tickling is relatively under-researched,’ says neuroscientist ...