Paying people a compliment appears to activate the same reward center in the brain as paying them cash, Japanese researchers said on Wednesday.
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Paying people a compliment appears to activate the same reward center in the brain as paying them cash, Japanese researchers said on Wednesday.

Half an hour of sniffing diesel fumes in a busy city street is enough to induce a "stress response" in the brain, according to scientists who measured volunteers.
The response continued to increase even after they had stopped breathing the fumes.