Laughter really is the best medicine for brain surgery as it helps relax the patient, a new study found. During delicate brain surgery where the patient is awake, if they panic and start to move about it could be life threatening. But US neuroscientists have found a way to tickle an area of the brain electrically to induce immediate laughter followed by a sense of calm and happiness. The technique was a "potentially transformative" way to calm some patients during awake brain surgery, even for people who are not especially anxious, the study authors said.

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