Table 2. Neuromuscular Blocking Effect of Atracurium (0.5 mg *symbol* kg sup -1 and Vecuronium (0.1 mg *symbol* kg sup -1) on the Mechanical (Adductor Pollicis Force) and Electromyographic Response of the Adductor Pollicis (Adductor Pollicis EMG) and the Geniohyoid Muscle (Geniohyoid EMG)