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Fruit flies flee from shadows: faux predators instigate response suggestive of fear.
The shadow of a predator overhead sends fruit flies into a tizzy. In response to an aerial threat, flies exhibit behaviors that echo the human state of fear, scientists report in the June 1 Current Biology.
Finding signs of a fearlike state in the fruit fly Drosophila melanogaster may allow scientists to better understand how the human brain creates emotions and how that process can go awry in fear and anxiety disorders.
"The Drosophila brain is so simple," says neuroscientist...
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