Brain Entrainment And How It affects
- By Chris Anderson
Physicist Heinrich Wilhelm Dove first discovered binaural, auditory beat simulation in 1839. And found that when two generated tones,
signals of different frequencies were presented separately one to each of your
ears; your brain detects the phase variation between them and attempts to
reconcile the difference. As these two frequencies move in and out of phase
your brain creates a third signal called a binaural beat, equal to the
difference between the two frequencies.
When your brain begins to resonate to the binaural beat, or
“follows” the beat you'll experience the Frequency Following Response, where your brain is triggered to resonate at that frequency, a
phenomenon that was researched and tested in 1973 by biophysicist Gerald Oster
at Mount Sinai Hospital in New York City. Oster’s research and others on
binaural beats and the Frequency Following Response has paved the way for
further development in the area of auditory stimulation to enhance brain
Neuroscientists recently discovered a correlation between an
increase of alpha brain waves, either through electrical stimulation or
meditation that has the ability to reduce depressive symptoms and to increase
creativity. Your brain will typically produce one of five small
rhythmic electrical pulses, patterns that can be observed using an
electroencephalograph (EEG) scanning equipment.
Gamma Waves 40 - 70 Hz
Gamma waves are associated with higher
mental functioning, perception, problem solving,
self-awareness, compassion and emotional responses such as happiness and
Beta Waves 13 - 40 Hz
Beta waves are most present when we are consciously awake and during periods of concentration, activity, anxiety and arousal.
Alpha Waves 7 - 13 Hz
Alpha waves are linked to creativity and
the state of relaxation and mindfulness.
Theta Waves 4 - 7 Hz
Theta waves are associated with the right brain
as well as subconscious thinking, deep relaxation, mental imagery and meditation.
Delta Waves 0.5 - 4 Hz
Delta waves occur during periods of deep
dreamless sleep and are linked to healing, recovery and pain relief.
For brain entrainment recordings to be able to work effectively where your brain can create a binaural beat and to experience the frequency following
response, the wearing of stereo headphones is essential.
Listening to some binaural frequencies can cause you to feel
deeply relaxed, drowsy or disorientated. For these reasons alone you are
advised never to listen to any binaural frequencies in recordings whilst driving or operating machinery.