Fig. 6

BIS. EP_0.1: 0.1 mg/kg esketamine combined with propofol; EP_0.2: 0.2 mg/kg esketamine combined with propofol; EP_0.3: 0.3 mg/kg esketamine combined with propofol; ^aP<0.05, compared with T_1;^bP<0.05, compared with T₃; ^cP<0.05, compared with T₅.