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神经元释放的特化神经递质。

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

在那一秒钟的末尾，节后神经元，纤维会释放不同的神经递质。

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

当我们别人做一件，我们的大脑会释放三种不同的神经递质，多巴胺、催产素和血清素。

Serotonin is one of the oldest neurotransmitters.

“血清素是最古老的神经递质之一。”

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

另一方面，脑部主要的抑制性神经递质GABA。

Your neurotransmitter levels are rising steadily.

你的神经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，一种神经递质。

These glands then release a burst of the neurotransmitter adrenaline.

然后这些腺体释放出神经递质肾上腺素的爆发。

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

当缺乏这三种神经传导素，一个人就会变得抑郁。

Caffeine is a pro at mimicking a neurotransmitter called adenosine.

咖啡因是一种够像“腺苷”神经递质一样在神经细胞间传递信息。

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

当这一途径激活，神经递质开始连锁反应。

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

这是由于存在过多的神经递质多巴胺导致的。

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，多巴胺是一种激素和神经递质。

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

所以你可以说大脑是释放神经递质的地方。

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

首先，它优化神经递质水平，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，这种学习通过神经递质多巴胺来实现。

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

愉快的经历使我们大脑的某些部分充满了多巴胺（一种神经递质）。

The main excitatory neurotransmitter in the brain is glutamate.

脑部主要的兴奋性神经递质谷氨酸。

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

失去这种神经递质以后，蚊子学习躲避危险的力被大大削弱。