Ever since the release of Inception, people all over the world have become more fascinated with dreams than they were before. And the technology in Inception, specifically the machine which allows members to simultaneously dream, has been discussed. As far as the technique is concerned, controlling your own dreams is very much possible. Lucid dreaming is a technique one can master and it occurs between Rapid Eye Movement (REM) sleep and wakefulness, at a point where brain activity during sleep is at its peak. Now scientists have figured out a way to duplicate this process in a move that they may or may not have taken from the Chris Nolan film.
15 women and 12 men participated in a study at the J. W. Goethe University in Frankfurt. They volunteered to be monitored while asleep and were given harmless electric shocks during their sleep that were not strong enough to wake them up. The technique is called transcranial alternating current stimulation (tACS).
Now during this experiment the volunteers awoke after roughly thirty seconds of electric shocks. They reported having an out of body experience which means that they saw themselves sleeping, knew they were dreaming or saw the world as if they were floating outside the confines of their body. They also reported having control over their dreams.
The frequency at which this state arose ranged from about 25 to 40 Hz, 25 Hz; being the frequency where the volunteers reported having the most control over their dreams and having the ability to change them at will.