This is a session which ramps down to the Schumann Resonance frequency, or 7.83 Hz. Research done with Zen meditators shows that 7.83 is a significant frequency, and other research indicates that stimulating the Schumann frequency results in more blood flow in the brain than any other frequency.
This session also uses a protocol which alternates stimulation between the left and right ears and eyes, which is particularly useful for people who are hyperactive.