It is HIGHLY recommended that you use Stereo Headphones and listen for approximately 30 minutes to achieve maximum effectiveness.
Wikipedia Definition of Binaural Tones:
Binaural tones are auditory processing artifacts, or apparent sounds, the perception of which arises in the brain for specific physical stimuli. This effect was discovered in 1839 by Heinrich Wilhelm Dove, and earned greater public awareness in the late 20th century based on claims that binaural beats could help induce relaxation, creativity and other desirable mental states.
When the perceived beat frequency corresponds to the delta, theta, alpha, beta, or gamma range of brainwave frequencies, the brainwaves entrain to or move towards the beat frequency.
Description of the BrainyBeats' Binaural Tones:
(or, more specifically, the Brainwave Frequencies that they cause)
ALPHA (7–13 Hz) - Causes improved creative problem solving, stress reduction and introspection.
BETA (13–39 Hz) - Causes an increase in mental ability, focus, alertness, and IQ.
DELTA (< 4 Hz) - Causes a state of deep dreamless sleep.
GAMMA (> 40 Hz) - Causes an increase in advanced problem solving abilities, perception and higher reasoning.
THETA (4–7 Hz) - Causes a state between wakefulness and sleep, lucid dreaming and creative mental imagery.