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This is Scientific American's 60-Second Science. I'm Erika Beras. Got a minute?
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(sound)
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You know how newborn babies can smell so good?
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Well that reaction might be more nature than nurture, at least for women.
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Researchers had 30 women sniff various mystery scents while their brains were scanned.
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Half the women had recently given birth.
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The other half never had.
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When the subjects sniffed clothes that, unknown to them, had been worn by newborns, their brains all showed specific activity.
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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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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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So the reaction to a newborn's scent may be a hard-wired bonding mechanism between mothers and infants,
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a biochemical reward for mom in the midst of all her hard work.
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Thanks for the minute, for Scientific American's 60-Second Science. I'm Erika Beras.
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显示原文 =This is Scientific American's 60-Second Science. I'm Erika Beras. Got a minute?
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显示原文 =You know how newborn babies can smell so good?
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显示原文 =Well that reaction might be more nature than nurture, at least for women.
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显示原文 =Researchers had 30 women sniff various mystery scents while their brains were scanned.
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显示原文 =Half the women had recently given birth.
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显示原文 =The other half never had.
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显示原文 =When the subjects sniffed clothes that, unknown to them, had been worn by newborns, their brains all showed specific activity.
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显示原文 =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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显示原文 =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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显示原文 =So the reaction to a newborn's scent may be a hard-wired bonding mechanism between mothers and infants,
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显示原文 =a biochemical reward for mom in the midst of all her hard work.
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显示原文 =Thanks for the minute, for Scientific American's 60-Second Science. I'm Erika Beras.
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- 单句循环：关
- 单句循环：×3
- 单句循环：×5
- 单句循环：∞