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

一旦吸引力被确认，你血液和肾上腺一起沸腾，激发你“战斗或逃跑”系统。

Whether you're awake or asleep, norepinephrine helps you remember things.

无论清醒状态下还是睡着了，去甲肾上腺帮助人们记住各种事情。

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

所以节前神经纤维释 ACh，节后神经纤维释去甲肾上腺。

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、去甲肾上腺和多巴胺。

When you fall asleep though, your norepinephrine levels drop.

当你入睡时，去甲肾上腺水平会下降。

This one's called norepinephrine. And it is always norepinephrine that's released from postganglionic fibers in the sympathetic nervous system.

这个叫做去甲肾上腺。交感神经系统节后纤维释远是去甲肾上腺。

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

你肾上腺会释压力荷尔蒙皮质醇，肾上腺，以及去甲肾上腺。

And releases epinephrine and norepinephrine into the blood making your heart pump faster.

并会向血液中释肾上腺和降肾上腺使你心跳加速。

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

或许你可听过几种神经递质介质——5-羟色胺与降肾上腺。

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

通过锻炼，人体会释一些重要情绪调节激，包括多巴胺、血清和降肾上腺。

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

会失去对5 羟色胺和正肾上腺敏感性 那就会引起认知功受损。

Once it hits your bloodstream, it targets three major neurotransmitters — serotonin, dopamine, and norepinephrine.

一旦它进入你血液，它就会瞄准三种主要神经递质——血清、多巴胺和去甲肾上腺。

Aside from its positive effects on dopamine, exercise also elevates levels of norepinephrine and serotonin.

除了可以增加多巴胺外，锻炼还提高体内去甲肾上腺以及 5-羟色胺水平。

This mood-depressing drug also reduced brain levels of norepinephrine, dopamine, and serotonin.

这种抑制情绪药物还降低大脑中去甲肾上腺、多巴胺和 5-羟色胺水平。

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；色氨酸是合成神经递质血清所必须。

And disturbances in norepinephrine transmission is thought to also be a key component in depression.

去甲肾上腺传递紊乱也被认为是抑郁症关键诱因。

These three are all technically monoamines but norepinephrine and dopamine are classified as catecholamines.

严格说来，这三种激属于单胺，但去甲肾上腺和多巴胺也被归为儿茶酚胺。

Yeah, I said the adrenal glands release norepinephrine as a hormone.

是，我说肾上腺释去甲肾上腺作为荷尔蒙。

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释，从而激活交感神经系统，引发你“战或逃”反应。

And, interestingly, Noradrenaline, also called norepinephrine, is one of the neurotransmitters released when you are exposed to the cold.

有趣是，去甲肾上腺（又名 norepinephrine）正是大脑在寒冷环境中分泌一种神经递质。