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

这些大麻素是一直处于信息发送状态的元释放的特化递质。

And at the end of that second, postganglionic neuron, the fiber releases a different neurotransmitter.

一秒钟的末尾，节后元，纤维会释放不同的递质。

When we do something nice for someone, our brains release three different neurotransmitters, dopamine, oxytocin and serotonin.

当我们为别人做一件好事时，我们的大脑会释放三不同的递质，多巴胺、催产素和血清素。

Serotonin is one of the oldest neurotransmitters.

“血清素是最古老的递质之一。”

On the flip side, the main inhibitory neurotransmitter in the brain is GABA.

另一方面，脑部主要的抑制性递质为GABA。

Your neurotransmitter levels are rising steadily.

你的递质激素水平正稳步上升。

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

提供缓解的化学物质之一是血清素，一递质。

These glands then release a burst of the neurotransmitter adrenaline.

然后这些腺体释放出递质肾上腺素的爆发。

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

当缺乏这三传导素时，一个人就会变得抑郁。

Caffeine is a pro at mimicking a neurotransmitter called adenosine.

咖啡因是一能够像“腺苷”递质一样细胞间传递信息。

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

当这一途径激活时，递质开始连锁反应。

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

这是由于存过多的递质多巴胺导致的。

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，多巴胺是一激素和递质。

So you could say the brain is where neurotransmitters are released.

所以你可以说大脑是释放递质的地方。

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。

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

你可能听说过血清素与幸福感的产生有关。

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

研究人员发现，这学习通过递质多巴胺来实现。

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分充满了多巴胺（一递质）。

The main excitatory neurotransmitter in the brain is glutamate.

脑部主要的兴奋性递质为谷氨酸。

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

失去这递质以后，蚊子学习躲避危险的能力被大大削弱。