Our target is comparission of hyoscine and atropine effect on patient who treat with ECT.randomized triple blind ,uni centere clinical trial.60 patients according to psychological indication and psychologist confirmation are entered and devided into 3 groups randomically excep who are older than 70 and those have medical contraindication for atropine and hyoscine. patients have tachy cardia,bradycardia,arrythmia,hypotension and hypertension are excluded.first group receive atropine0.5mg/kg as pretreatment,second group hyoscine 0.1 mg/kg and third group water0.01ml/kg .induction is done with nesdonal 2 mg/kg and succinyl choline 0.5mg/kg.blood pressure,heart rate are measured before pretreatment,after and before induction,emmediately and 1,3,5 minutes after shock.duration of convulsion according to seconds,recovery time by minutes and volume of respiratory secretions by times to suction are measured.hearte rate by ECG monitoring,duration of convulsion by EEGand o2 saturation by pulse oximetry.data collection and sampling is done from Farvardin 1393 untill Shahrivar 1393