Consequently, a larger area of the brain will be activated when stimulated. These frequencies are avoided because overstimulation can cause depression in patients. As in all other areas of sound therapy, research is still being done to determine exactly why and how these changes occur within the brain. The plasticity of the brain due to auditory stimulus has surprised many neurologists, but the results have provided another path to improve audition as well as other senses and behaviors. Samona's Therapy uses a multi-step method to introduce frequencies and stimulate brain pathway formation.
Patients begin the therapy listening to simple classical music with amplified upper frequencies.
These songs have few instruments, simple melodies, and few movements. As the therapy progresses, the music becomes more and more complex, and sounds of nature are also added. Although there is a general framework for the therapy, the rate at which a patient moves through the program is very independent. After noticing that upper-range frequencies were the first to be damaged in taped recordings, more advanced technological methods were used to produce and listen to music. Many studies have shown that cortex development is dependent upon stimulation.