Figure 3. The electroencephalogram is shown from 4 min, 20 s after pretreatment with placebo = 3 min, 20 s after 0.3 mg/kg of etomidate to 4 min, 40 s after pretreatment. Evident is high continuous 1-3/s delta activity with irregular sharp negative elements (in reduced registration speed 15 mm/s). Myoclonus appears in ECG without concomitant spike or rapid sharp waves. The ECG reveals movement artifacts of myoclonus.