In January 1962, three schoolgirls at a mission boarding school near Lake Victoria in what was then called Tanganyika began ...

It starts calmly - and then everything breaks. This moment captures reactions that spiral into uncontrollable laughter. No ...

Scientists mapped two hidden laughter networks in the brain, revealing why spontaneous laughter cannot be faked and may even help ease pain.

Studies in animals and epilepsy patients suggest that spontaneous laughter is regulated by different brain networks than ...

Until now, the brain regions underlying laughter were not well understood, in part because it's hard to elicit genuine ...

A 40-year-old man’s uncontrollable, inappropriate laughter was more than a nuisance — it was a symptom of a rare form of epilepsy, according to doctors in Hawaii. The man had suffered since he was 8 ...

Two sets of published diagnostic criteria are available to help differentiate PBA from depression. The first set of diagnostic criteria was developed by Poeck in 1969. 3 These 4 criteria include: ...

Laughing is something you do with virtually no thought. Your friend tells a funny joke? You chuckle and don’t think twice about it. And there’s a reason for the adage “laughter is the best ...

The symptoms: The woman visited a clinic because she had long experienced bursts of uncontrollable laughter, which doctors described as "mirthless" in a report of her case. According to the patient, ...

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