Methods Rats received a unilateral microinjection of 6-hydroxydopamine into the right ventral tegmental area(VTA) and the right median forebrain bundle(MFB).

• 方法将6-羟基多巴立体定向注入大鼠右侧前脑内侧束和中脑被盖腹侧区,观察大鼠的行为变化和中脑黑质区的形态学变化。