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1 .This is Scientific American's 60-Second Science. I'm Erika Beras. Got a minute?
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2 .(sound)
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3 .You know how newborn babies can smell so good?
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4 .Well that reaction might be more nature than nurture, at least for women.
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5 .Researchers had 30 women sniff various mystery scents while their brains were scanned.
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6 .Half the women had recently given birth.
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7 .The other half never had.
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8 .When the subjects sniffed clothes that, unknown to them, had been worn by newborns, their brains all showed specific activity.
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9 .What got turned on were the same dopamine pathways that are activated by doing cocaine, by eating when hungry or by engaging in other reward-inducing behavior, like playing a slot machine.
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10 .And while all the women's brains lit up, the brains of those who had recently given birth showed significantly more activity than did the others'.
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11 .So the reaction to a newborn's scent may be a hard-wired bonding mechanism between mothers and infants,
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12 .a biochemical reward for mom in the midst of all her hard work.
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13 .Thanks for the minute, for Scientific American's 60-Second Science. I'm Erika Beras.
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