Laughing with others makes us all feel better - we experience a momentary elevation in our mood and our sense of feeling relaxed.
But, scientists have long wondered why that is so. A recent series of psychological studies has illuminated some of the reasons laughter is good for us. And, our brains are behind it all.
Check out this excerpt from the NY Times. Link to full article is below.
Laughter is regularly promoted as a source of health and well being, but it has been hard to pin down exactly why laughing until it hurts feels so good.
The answer, reports Robin Dunbar, an evolutionary psychologist at Oxford, is not the intellectual pleasure of cerebral humor, but the physical act of laughing. The simple muscular exertions involved in producing the familiar ha, ha, ha, he said, trigger an increase in endorphins, the brain chemicals known for their feel-good effect.
His results build on a long history of scientific attempts to understand a deceptively simple and universal behavior. “Laughter is very weird stuff, actually,” Dr. Dunbar said. “That’s why we got interested in it.” And the findings fit well with a growing sense that laughter contributes to group bonding and may have been important in the evolution of highly social humans.
Social laughter, Dr. Dunbar suggests, relaxed and contagious, is “grooming at a distance,” an activity that fosters closeness in a group the way one-on-one grooming, patting and delousing promote and maintain bonds between individual primates of all sorts.
In five sets of studies in the laboratory and one field study at comedy performances, Dr. Dunbar and colleagues tested resistance to pain both before and after bouts of social laughter. The pain came from a freezing wine sleeve slipped over a forearm, an ever tightening blood pressure cuff or an excruciating ski exercise.
The findings, published in the Proceedings of the Royal Society B: Biological Sciences, eliminated the possibility that the pain resistance measured was the result of a general sense of well being rather than actual laughter. And, Dr. Dunbar said, they also provided a partial answer to the ageless conundrum of whether we laugh because we feel giddy or feel giddy because we laugh.
“The causal sequence is laughter triggers endorphin activation,” he said. What triggers laughter is a question that leads into a different labyrinth.
Robert R. Provine, a neuroscientist at the University of Maryland, Baltimore County, and the author of “Laughter: A Scientific Investigation,” said he thought the study was “a significant contribution” to a field of study that dates back 2,000 years or so.
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