Fig. 1From: Comparison of the trapezius and the adductor pollicis muscle as predictor of good intubating conditions: a randomized controlled trialPosition of the electrodes at the accessory nerve and the piezoelectric element (white arrow) on the trapezius muscle. Blue lines: sternocleidomastoid muscle. Red line: anterior border of the trapezius muscle. Yellow lines: accessory nerveBack to article page