Binaural beats of 40 Hz focus on the gamma waves of the brain, which is documented as the fastest frequency range in the brain.  The gamma frequency is where the brain links and processes information, for example, you touch a hot stove plate, the sensation is extreme heat and the process includes the feeling of pain and the removal of your hand from the plate, although this whole process only takes a few minutes it is all done in the gamma range of the brain. 

It is easy to see why the gamma waves are the…