someone's hand being poked with a needle, and subjects have an "isomorphic sensorimotor" response-hands tense in empathy. Among both whites and blacks, the response is blunted for other-race hands; the more the implicit racism, the more blunting. Similarly, among subjects of both races, there's more activation of the {emotional} medial PFC when considering misfortune befalling a member of their own race than of another race."
( Robert M. Sapolsky )
[ Behave: The Biology of Humans ]
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