来自《耶鲁大学开放课程：有关食物的心理学、生物学和政治学 第5集 第5集》

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  and therefore the physiology.
  因此也是影响生理活动的因素
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  There are central signals and peripheral signals,
  如果刚刚所提 既有中枢信号
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  as I mentioned before.
  也有周边信号的存在
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  Let's look at the central signals first.
  先来看看中枢信号
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  There are signals that are going on in the brain,
  大脑中有各种信号
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  some of which stimulate eating and others inhibit eating,
  有些促进饮食有些抑制饮食
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  and that's the hunger and satiety
  这就形成了我前面提到过的
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  that we mentioned a moment ago.
  饥饿与饱食
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  These things affect--directly affect food intake.
  这些信号直接影响食物的摄入量
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  How much food intake--what people eat
  人们吃多少 吃什么
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  and what kind of foods they eat,
  吃哪一种食物
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  have a feedback loop to the brain that affects subsequent intake,
  会通过反馈回路传至大脑从而影响摄入量