The second aspect of romantic love is attraction, influenced by a neurotransmitter called dopamine.

浪漫爱情第二个方面是吸引力，它受到做多巴胺神经递质影响。

Tyrosine is needed to synthesize dopamine and norepinephrine, and tryptophan is needed to synthesize the neurotransmitter serotonin.

酪氨酸是合成多巴胺、去甲肾上腺素所必须；色氨酸是合成神经递质血清素所必须。

When these three neurotransmitters are in deficit, people become depressed.

当缺乏这三神经传导素时，个人就会变得抑郁。

You've probably heard about the neurotransmitter serotonin being associated with happiness.

你可听说过血清素与幸福感产生有关。

This is attributed to the overabundance of a neurotransmitter called dopamine.

这是于存在过多神经递质多巴胺导致。

But by blocking neurotransmitters released by interneurons, tetanus toxin causes uncontrollable muscle contractions and spasms.

但破伤风毒素通过阻断中间神经元释放神经递质，会导致不受控肌肉收缩痉挛。

Serotonin is one of the oldest neurotransmitters.

“血清素是最古老神经递质之。”

And without this neurotransmitter, mosquitoes become much worse at learning to avoid danger.

失去这神经递质以后，蚊子学习躲避危力被大大削弱。

That learning, the researchers found, is made possible by the neurotransmitter dopamine.

研究人员发现，这学习通过神经递质多巴胺来实现。

It's a neurotransmitter that helps promote feelings of attraction, excitement, and giddiness.

它是神经递质，有助于促进吸引、兴奋和头晕感觉。

You've probably heard of a couple of these neurotransmitters—serotonin and norepinephrine.

或许你可听过几神经递质介质——5-羟色胺与降肾上腺素。

So caffeine stops adenosine from doing its thing, while some stimulating neurotransmitters are still around.

所以说咖啡因抑制了腺苷酸执行它职责，然而那些兴奋神经传导物质依然在周围。

Caffeine is a pro at mimicking a neurotransmitter called adenosine.

咖啡因是够像“腺苷”神经递质样在神经细胞间传递信息。

One of those relief-providing chemicals is serotonin, a neurotransmitter.

提供缓解化学物质之是血清素，神经递质。

When this pathway activates, the neurotransmitter starts a chain reaction.

当这途径激活时，神经递质开始连锁反应。

These cannabonoids are specialized neurotransmitters released by neurons having just fired.

这些大麻素是直处于信息发送状态神经元释放特化神经递质。

While dopamine and endorphin delight us, the other neurotransmitters send information from A to B.

当多巴胺和内啡肽让我们兴奋时，其他神经递质将信息从 A 传递到 B。

Pleasurable experiences flush certain parts of our brain with dopamine, a neurotransmitter.

愉快经历使我们大脑某些部分充满了多巴胺（神经递质）。

Our motivation levels are affected by dopamine, a hormone and neurotransmitter.

我们动力水平受到多巴胺影响，多巴胺是激素和神经递质。

Tyrosine is then turned into neurotransmitters important for normal brain development and function.

酪氨酸接着会被转化成对大脑正常发育和功都很重要神经递质。