In fluraze-pam sensitive 5 IUs and 2 EUs,the depressant effect could not be antagonized byGABA-A receptor antagonist bicuculline.

• GABA-A受体拮抗剂荷包牡丹碱不能阻断Flu对IUs和EUs的阻遏作用,但能阻断Flu对NRUs的抑制作用,阻断率为60%25。