可卡因并不是随便的比喻，爬行类的大脑，神经系统最原始的部分之一，在人类熟睡后生产大量的多巴胺。

And cocaine is more than an idle metaphor. The reptilian brain — one of the nervous system's most ancient parts — floods you with dopamine, just as it does after you snort a line of blow.

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我们认为，'也许这确实会涉及那些与重瘾有关的多巴胺类似的脑神经系统。'

We thought, 'Maybe this does involve similar brain systems as those involved in addictions which are heavily dopamine-related.'

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撤药反应的出现可能与药物对中枢神经系统中血清素、多巴胺、去甲肾上腺素、GABA、胆碱能类递质系统的影响有关。

Appearance of withdrawal reactions may associated with pharmacological effects on serotonin, dopamine, norepinephrine, GABA and cholinergic transmitter in central nervous system.

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