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

或许你可能听过几种递质介质——5-羟色胺与降肾上腺素。

First, it optimizes the levels of neurotransmitters like serotonin, norepinephrine, and dopamine.

首先，它能优化递质水平，如血清素、去甲肾上腺素和多巴胺。

And with fewer neurotransmitters going between neurons, once again, it's harder for memories to form.

由于元之间递的递质更少，记忆也更难形成。

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

浪漫爱情的第二个方面吸引力，它受到一种叫做多巴胺的递质的影响。

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

酪氨酸合成多巴胺、去甲肾上腺素所必须的；色氨酸合成递质血清素所必须的。

Your neurotransmitter levels are elevated. This indicates that you are happy.

你的递素明显增多。表明你现在十开心。

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

这由于存在过多的递质多巴胺导致的。

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元释放的递质，会导致不受控的肌肉收缩痉挛。

Serotonin is one of the oldest neurotransmitters.

“血清素最古老的递质之一。”

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

失去这种递质以后，蚊子学习躲避危险的能力被大大削弱。

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

研究人员发现，这种学习通过递质多巴胺来实现。

Messages jump across these gaps in the form of molecules called neurotransmitters.

信息以被称为“递质”的子形式跳过这些缝隙。

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

它一种递质，有助于促进吸引、兴奋和头晕的感觉。

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的职责，然而那些兴奋的导物质依然在周围。

It is a small molecule called a neurotransmitter that works in our brain mostly.

它一种小子，被称为递质，主要在我们的大脑中起作用。

Caffeine is a pro at mimicking a neurotransmitter called adenosine.

咖啡因一种能够像“腺苷”递质一样在细胞间递信息。

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

提供缓解的化学物质之一血清素，一种递质。

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，其他递质将信息从 A 递到 B。

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

愉快的历使我们大脑的某些部充满了多巴胺（一种递质）。

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

我们的动力水平受到多巴胺的影响，多巴胺一种激素和递质。