The previous studies indicated it produced anesthetic effect through its mimic GABA action ,which enhanced central inhibition mediated by postsynaptic GABAA receptors.

• 近年来发现大多数全身麻醉药具有突触前效应，如抑制神经末梢突触前膜上的电压敏感性离子通道，从而引起突触前神经递质释放的改变：减少兴奋性神经递质释放或增加抑制性神经递质释放，最终抑制中枢突触传递。