This 2 arm study will look at the proposed treatment (electrical stimulation of the vestibular nerve) versus a sham or placebo device. The effect of the device will be evaluated in a study that uses normal sleepers and advances them(puts them to bed 5-hours earlier than normal) to see if they fall asleep faster in one group or the other. Stimulation in the treated or sham group is only for the first hour after lights off.