A scientific study was recently done in England to determine whether or not people can tickle themselves. Volunteers were attached to a brain-scanning device and were tickled on their palms with a piece of soft foam. The participants' brain scans were monitored while they were being tickled, and when they tickled themselves. It was found that during self-tickling, the cerebellum alerted another area of the brain about what to expect, so the ticklish feeling was diminished.

英格蘭近期做了一項關于人是否可以替自己哈癢的科學研究。自愿受測者接上腦部掃描儀，并用一塊軟泡沫棉給手掌哈癢。參與者在被哈癢和自行哈癢時，腦部掃描狀況都受到監視。結果發現，在自行哈癢的過程中，小腦會向腦部的另一部位發出警告，使其預先防范，所以癢的感覺就消失了。