There are a total of 4 BINAURAL BEATS audio files below. Each file lists its  intended influence on the BRAIN.

Binaural beats are a technique of combining two slightly different sound frequencies to create the perception of a single new frequency tone.  

It is reported these new frequencies  stimulate the brain in the way identified in each file title.  

There is some science behind Binaural Beats.  I'll leave that to your own research.

Use headphones for best results!