Step aside killer zombies: scientists have delved deep into ancient brain circuits to reveal neurons that can turn mild-mannered mice into ferocious predators — before switching the rodents back to their normal placid selves.
The researchers at Yale University used “optogenetic” technology, which switches specific neurons on and off in genetically engineered animals using laser light, to tap into brain mechanisms that control predatory hunting.
“We’d turn the laser on and they’d jump on an object, hold it with their paws and intensively bite it as if they were trying to capture and kill it,” said Ivan de Araujo, lead investigator.
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