This view is conditioned by the fact that many of the drugs that are prescribed to treat these disorders, like Prozac, act by globally changing brain chemistry, as if the brain were indeed a bag of chemical soup.
以下例子可以印证上述观点 即很多被开出来治疗这些疾病的处方药， 如百忧解，都是通过全局性的改变大脑化学构成来起效果的， 好像大脑真是一袋子化学物质。