Researchers have been experimenting with electrosleep since the early 1900s, when in Russia, a group of scientists attempted to find a specific frequency that would put patients reliably and completely to sleep. Though they never found that frequency, they discovered something else along the way. Surprisingly, the patients in these trials reported significant improvements in their sleep. Since the onset of the experiment, they fell asleep more quickly, slept more deeply, and felt more satisfied with the quality of their overall sleep. Thus, modern CES Devices were born!