as something very important in substance abuse and dependence.

这一发现对物质滥用和依赖研究很关键
What she did is she took cocaine addicts

她让可卡因上瘾者
and she put them in the scanner, and she scanned their brains

进入扫描仪然后扫描他们的大脑
specifically paying attention to the dopamine pathway.

她特别关注了多巴胺通路
What she found is that

她发现
people who became addicted to cocaine and consumed more cocaine

可卡因上瘾者吸食的可卡因越多
had less density of dopamine neurotransmitters and receptors.

多巴胺神经介质和受体的密度就越小
So they weren't as sensitive to the drugs effects.

就是说他们对这些药物作用没有那么敏感
They would consume more

他们需要吸食更多
to really get the impact that other people naturally had.

来达到这些药物在普通人身上的效果
In looking at this,

发现这个之后
to translate this into excess food consumption and obesity,

她把这个理论应用在过量饮食和肥胖上