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Sound Therapy 101

Sound has been a tool for promoting the physical and emotional health of the body for as long as history can account for, deeply rooted in ancient cultures and civilizations. The ancient Egyptians used vowel sound chants in healing because they believed vowels were sacred. Tibetan monks take advantage of singing bowls, which they believe to be “a symbol of the unknowable” whose “vibrations have been described as the sound of the universe manifesting.  The sound waves from ancient healing instruments entrain the brain to move into the deeper Alpha, Theta and Delta brain wave frequencies, inducing a deep meditative and peaceful state. As human beings, we are comprised mainly of liquid, these vibrations deeply penetrate our bodies, moving through our tissues and organs. The sound resonates directly into our cellular memory releasing blockages and creating a profound sense of peace and relaxation.


Psycho acoustics is the scientific study of the perception of sound, and it has fueled researchers paths to better understand how it can be used as medicine. To understand the fundamentals of sound in healing, we must first understand our brain waves. The nucleus of our thoughts, emotions, and behaviors, is the communication between neurons. Brain waves are generated by way of electrical pulses working in unison from masses of neurons interacting with one another. Brain waves are divided into five different bandwidths that are thought to form a spectrum of human consciousness. The slowest of the waves are delta waves (.5 to 3 Hz), which are the slowest brain waves and occur mostly during our deepest state of sleep. The fastest of the waves are gamma waves (25 to 100 Hz), which are associated with higher states of conscious perception. Alpha waves (8 to 12 Hz) occur when the brain is daydreaming or consciously practicing mindfulness or meditation.


According to Dr. Suzanne Evans Morris, Ph.D., a speech-language pathologist:

Research shows that different frequencies presented to each ear through stereo headphones create a difference tone (or binaural beat) as the brain puts together the two tones it actually hears. Through EEG monitoring, the difference tone is identified by a change in the electrical pattern produced by the brain. For example, frequencies of 200 Hz and 210 Hz produce a binaural beat frequency of 10 Hz (The difference in 210 Hz and 200 Hz is 10 Hz). Monitoring of the brain’s electricity (EEG) shows that the brain produces increased 10 Hz activity with equal frequency and amplitude of the wave form in both hemispheres of the brain (left and right hemisphere).


A series of experiments conducted by neuro-electric therapy engineer Dr. Margaret Patterson and Dr. Ifor Capel, revealed how alpha brainwaves boosted the production of serotonin. 

Dr. Capel explained:

As far as we can tell, each brain center generates impulses at a specific frequency based on the predominant neurotransmitter it secretes. In other words, the brain’s internal communication system—its language, is based on frequency… Presumably, when we send in waves of electrical energy at, say, 10 Hz, certain cells in the lower brain stem will respond because they normally fire within that frequency range.


It’s very intriguing to think that something as simple as sound, as music, which we have come to treat as utterly pleasurable entertainment, has not only been used to promote healing and well-being, but has proven to work through research as well.

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©2019 by Natalie Love