在实验室里，健康的成年人大脑神经元的寿命通常不超过几个小时，因此不可能被广泛的研究。
In laboratories, healthy adult human brain neurons typically live no more than a few hours, making extensive research impossible.
根据康奈尔大学食品与品牌实验室的一项新研究，小小的非食品奖励——比如麦当劳开心乐园餐中的玩具——同样能刺激人的大脑反应中枢，就像食物那样。
According to a new study from Cornell University's Food and Brand Lab, small non-food rewards—like the toys in McDonald's Happy Meals—stimulate the same reward centers in the brain as food does.
第二个实验研究对应的大脑活跃区域。
The second experiment looked at the brain regions activated.
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