 Before applying the net, subjects head will be measured in order to determine the appropriate net size for EEG recording. Afterwards, using a soft and wide edged china marker, a small mark will be drawn on the scalp to indicate the midpoint of the head. While measuring the head, the electrode net will be dipped in electrolyte solution, composed of purified water, salt and baby shampoo. The solution then will be warmed up to body temperature to minimize the discomfort which could be caused by wetting the subjects head. During net application procedure no scraping of the scalp is required. Preparation process should take no more than 20 minutes and will cause no distress to the subject. 