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Monkey brains sensitive to others' flubs

Specialized neurons light up only when a peer errs

When one monkey sees another monkey messing up, the event ignites a small cluster of nerve cells in the brain that are sensitively tuned to others’ failures. The results help explain why the members of another primate species are such exquisite connoisseurs of blame.

“We humans are very sensitive to others’ mistakes,” says Masaki Isoda of the Okinawa Institute of Science and Technology in Japan. He and his colleagues describe the macaques’ blunder detectors online August 5 in Nature Neuroscience.  

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