Objective To investigate the effect of propofol locally perfused into the rat prefrontal cortex(PFC) on glutamate and GABA extracellular levels.Methods Thirty male adult rats were randomly divided into 4 groups: test groups and 1 control group(n=6 each),with a microdialysis probe inserted into the PFC.In the test groups,artificial cerebrospinal fluid(aCSF) containing different concentrations of propofol(1,3,10 and 30 μmol/L respectively) was perfused into the PFC at 2 μl/min;in the control group,only aCSF w...