多巴胺被认为是“快乐激素”，产生喜悦感；去甲肾上腺素类似于肾上腺素，导致心跳加速和兴奋感，据来自美国罗格斯大学的人类学家，著名的爱情研究者Helen Fisher所说，这两种化学物质共同引起喜悦感，充沛的精力，失眠，强烈的愿望，食欲的减退和集中的注意力。
Dopamine is thought to be the "pleasure chemical, " producing a feeling of bliss. Norepinephrine is similar to adrenaline and produces the racing heart and excitement.
快乐诱导化学多巴胺包含包含酪氨酸和苯丙氨酸，两种可以于富含蛋白质的食品如鱼，肉，豆类等食品中找到的氨基酸。
The pleasure-inducing chemical dopamine contains tyrosine and phenylalanine, a pair of amino acids that can be found in protein-packed foods like fish, meat and beans.
这种快乐的加强几乎全因多巴胺的分泌。
The reinforcement or reward happens almost entirely because of dopamine.
多巴胺使大脑不断期望得到这种犒赏，从而不断加强快乐感与这种行为之间的联系，特别是当它能从周围环境中得到正确的暗示时。
It conditions the brain to want that reward again and again -reinforcing the connection each time -especially when it gets the right cue from your environment.
多巴胺使大脑不断期望得到这种犒赏，从而不断加强快乐感与这种行为之间的联系，特别是当它能从周围环境中得到正确的暗示时。
It conditions the brain to want that reward again and again - reinforcing the connection each time - especially when it gets the right cue from your environment.
那么这一点快乐的感觉是怎样转化为一种习惯的呢？这与一种感知快乐的化学物质多巴胺有关。
Just how that bit of happiness turns into a habit involves a pleasure-sensing chemical named dopamine.
由多巴胺带来的对快乐的感受，在一定程度上解释了为什么音乐在人类社会历史上占据如此重要的地位。
Dopamine-induced pleasure may help explain why music has been such a big part of human societies throughout history.
根据UCL神经病学研究中心的一项最新研究得出：增加大脑中化学物质多巴胺的效果就会通过影响快乐的期望程度相应的影响人们作出生活中的选择。
Enhancing the effects of the brain chemical dopamine influences how people make life choices by affecting expectations of pleasure, according to the new research from the UCL Institute of Neurology.
Sharot博士补充说：“我们有理由相信，多巴胺能够增加人类快乐的期望程度，但是我们对它的强大作用感到吃惊。”
Dr Sharot added: "we had reason to believe that dopamine would enhance expectations of pleasure in humans, but were surprised at the strength of this effect."
目前，一项新研究证实了人类大脑中一种叫多巴胺的化学物质有很重要的作用，它通过影响我们对快乐的期望程度及相应的结果来指导我们如何做出如此的生活选择。
Now, a new study confirms an important role for the brain chemical dopamine in how people make such life choices, by influencing our expectations of the pleasure associated with their outcomes.
目前，一项新研究证实了人类大脑中一种叫多巴胺的化学物质有很重要的作用，它通过影响我们对快乐的期望程度及相应的结果来指导我们如何做出如此的生活选择。
Now, a new study confirms an important role for the brain chemical dopamine in how people make such life choices, by influencing our expectations of the pleasure associated with their outcomes.
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