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(收稿:2004205210)

成瘾行为与多巴胺D4受体的研究进展

西安交通大学法医学国家重点学科实验室(西安710061)冯　雪3　徐　平33　综述　李生斌33　审校

1　成瘾行为　人类表现出的许多过度沉湎于某种事物的行为,这些行为并不涉及服用具有生物效应的药物,行为科学上称之为行为“成瘾”(Behavi o ral addicti on),常见的有:赌博成瘾、过量进食、性成瘾、计算

3博士生在读

33西电集团医院机游戏成瘾等。涉及服用具有生物效应的药物造成的成瘾行为主要是毒品依赖。

大多数毒品都是通过中枢神经系统起作用的。而中枢神经系统的大脑主要由神经元(即神经细胞)和胶质细胞构成,每个神经元由细胞体、树突、轴索构成,轴索形成突触,延伸到其他神经元,并以传递电信号的方式,将信息传给远处的神经元,在传递信号的过程中,名为神经递