Your adrenal gland releases the stress hormones cortisol, epinephrine, also known as adrenaline, and norepinephrine.

你的肾上腺会释放压力荷尔蒙皮质醇，肾上腺，以及去甲肾上腺。

They lose their sensitivity to serotonin and norepinephrine. Which leads to...? Impaired cognitive function.

会失去对5 色胺正肾上腺的敏感性 那就会引起认知功能受损。

Well, exercise releases an important blend of mood altering hormones including dopamine, serotonin and norepinephrine.

通过锻炼，人体会释放一些重要的情绪调节激，包括多巴胺、血清肾上腺。

Once attraction is confirmed, your bloodstream is flooded with norepinephrine, activating your fight or flight system.

一旦吸引力被确认，你的血液肾上腺一起沸腾，激发你的“战斗或逃跑”系统。

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

或许你可能听过几种神经递质介质——5-色胺与肾上腺。

To help you focus, norepinephrine creates a sort of tunnel vision, blocking out surrounding distractions, possibly even warping your sense of time, and enhancing your memory.

为了帮助你专心肾上腺，创造出一种管状视力防止注意力涣散，甚至有可能弯曲你的时间观念并提升记忆力。

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

先，它能优化神经递质水平，如血清、去甲肾上腺多巴胺。

He explains that the neurotransmitter dopamine is converted into the neurotransmitter norepinephrine by an enzyme called dopamine beta-hydroxylase, and that blood type O people have higher levels of DBH, so they are prone to anxiety from increased levels of norepinephrine.

他解释神经递质多巴胺通过一种叫做多巴胺-ß-化酶的酶转化成神经递质去甲肾上腺，O 型血的人有高水平的DBH（多巴胺-ß-化酶），所以他们容易因去甲肾上腺的增加而焦虑。

When you fall asleep though, your norepinephrine levels drop.

当你入睡时，去甲肾上腺水平会下。

Cocaine increases the release of certain neurotransmitters, but it's biggest effect is blocking reuptake receptors on presynaptic axon terminals, and both actions keep neurotransmitters like dopamine, norepinephrine, and serotonin in the synapse longer and increases their effects.

可卡因促进一些特定神经递质的释放，但它最大的作用是阻止突触前神经元终端受体的“再摄取”；两种作用都能使得神经递质，如多巴胺、去甲肾上腺与5-HT，在突触间隙存留时间延长，从而加强他们的作用。

On the smooth muscle cells controlling some blood vessels, there are receptors called alpha receptors — when norepinephrine, or epinephrine, bind to those receptors, they make those smooth muscle cells contract, thereby restricting blood flow.

在控制一些血管的平滑肌细胞上，有一种叫做α受体的受体——当去甲肾上腺或肾上腺与这些受体结合时，它们使这些平滑肌细胞收缩，从而限制血液流动。

Diagnosis of neuroblastoma usually starts with testing for HMA and VMA in the blood or urine, since high levels those metabolites may indicate tumors that secrete epinephrine and norepinephrine.

对于神经母细胞瘤的诊断，通常先检测血或尿中的HMAVMA，这是因为代谢产物含量高可提示肿瘤在释放肾上腺去甲肾上腺。

As a result, dopamine, norepinephrine, and serotonin levels in the brain begin to fall, leading to abnormal brain development and intellectual disability.

如此一来，脑中多巴胺、去甲肾上腺血清的水平开始下，从而导致大脑发育异常智力障碍。

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、去甲肾上腺所必须的；色氨酸是合成神经递质血清所必须的。

This is because the nicotine in cigarettes released epinephrine and norepinephrine, which increase your heart rate and narrowed blood vessels.

这是因为烟草中的尼古丁会释放肾上腺去甲肾上腺。

Interestingly, one of the most effective antipsychotic drugs, clozapine, is a weak D2 antagonist, suggesting that other neurotransmitter systems like norepinephrine, serotonin, and GABA are involved.

有趣的是，最有效的抗精神病药之一，氯氮平，是一种弱D2受体拮抗剂；这提示其它神经递质系统，比如去甲肾上腺、5-色胺、γ-氨基丁酸也与疾病有关。

Adderall also causes the release of norepinephrine, which activates the sympathetic nervous system, initiating your fight-or-flight response.

Adderall 还会导致去甲肾上腺的释放，从而激活交感神经系统，引发你的“战或逃”反应。

Higher levels of norepinephrine also apparently causes a tendency towards anger and aggression.

高水平的去甲肾上腺能显著导致愤怒攻击的倾向。

So, the preganglionic fiber releases ACh, and the postganglionic releases norepinephrine.

所以节前神经纤维释放 ACh，节后神经纤维释放去甲肾上腺。

Early romantic love and attraction, what you might call passion, is all about flooding the brain's reward systems in a tsunami of feel-good chemicals like adrenaline, norepinephrine, and dopamine.

早期的浪漫爱情相互吸引，或者是你称为热情的东西，就是给脑中的感官系统带来了一场充满愉悦感的海啸，肾上腺、去甲肾上腺多巴胺等物质涌入脑中。