Fig. 3. Onset characteristics (mean %T1 against time) after 0.1 mg/kg mivacurium at the corrugator supercilii. Mivacurium was either injected immediately after loss of consciousness (group A; solid line) or after 15 min of stable anesthesia with propofol-oxygen 1.0 (group B; dashed line) or propofol-nitrous oxide 0.7-oxygen 0.3 (group C; dotted line). The points on each line represent, from left to right, T1 and time to last 100% value (lag), T1 and time to 50, 75, 95 and 100% of maximum blockade, respectively.