Fig. 1From: Marked attenuation of the amplitude of transcranial motor-evoked potentials after intravenous bolus administration of ketamine: a case reportTraces showing the motor-evoked potentials in our patient. Three minutes after administration of ketamine, there was a significant decrease in the amplitudes of motor-evoked potentials recorded from eight muscles. APB Abductor pollicis muscle, QF Quadriceps femoris muscle, TA Tibialis anterior muscle, FHB Flexor hallucis brevis muscleBack to article page