Article by Bianca Sengos, Rainbow Sounds
Exploring how precisely tuned crystal bowls may support brainwave stimulation and symptom relief in Parkinson’s care.
Emerging research suggests that sound-based therapies – specifically vibroacoustic stimulation in the 40 Hz range of – may provide symptom relief for individuals with Parkinson’s disease. In this article, we explore how crystal singing bowls, when carefully selected and played with care and precision, can help recreate this therapeutic frequency and serve as a gentle, non-invasive wellness practice to support neurological health.
The Science Behind 40 Hz Therapy
A 2020 double-blind, placebo-controlled study investigated the effects of physioacoustic therapy (PAT) at 40 Hz on individuals with Parkinson’s. Over a 12-week period, participants who received 40 Hz PAT experienced statistically significant improvements in key motor symptoms—including tremors, rigidity, gait, and bradykinesia.
These findings highlight the potential of low-frequency sound as an effective complementary therapy for enhancing neural function in Parkinson’s patients.
Reference: Mosabbir, A., Almeida, Q. J., & Ahonen, H. (2020). The Effects of Long-Term 40-Hz Physioacoustic Vibrations on Motor Impairments in Parkinson’s Disease. Healthcare, 8(2), 113. Read the study
Using Rainbow Sounds Crystal Singing Bowls to Create 40–42 Hz Gamma Stimulation
When two crystal singing bowls are played together, they can produce a beat frequency—a perceived tone created by the difference in their fundamental frequencies. To target therapeutic gamma stimulation, a pair of bowls should be selected to produce a frequency difference in the 40–42 Hz range. This phenomenon may act as a “phantom” pulse that the brain perceives and responds to.
Our Recommended Bowl Pair for 40 Hz Entrainment
F4 Bowl: 342.88 Hz
G4 Bowl: 384.87 Hz
→ Beat Frequency: 41.99 Hz
This combination falls directly within the ideal range for gamma brainwave entrainment.
When played simultaneously, these bowls produce a rhythmic auditory pulse that may help entrain gamma activity in the brain. Gamma frequencies are associated with attention, cognitive processing, sensory integration, and neuroplasticity. For individuals with Parkinson’s, this rhythmic stimulation may support improved motor control, neural communication, and overall symptom relief.
Suggested Home Practice Protocol
Duration: 25 minutes daily or as part of a recovery routine
Position: Seated or lying down in a quiet, relaxed environment
Setup: Bowls played simultaneously or alternated gently, ideally near the body to encourage vibroacoustic resonance
Why Quality and Tuning Matter
Not all crystal bowls are created equal. For therapeutic effects, precise tuning is essential. Many commercially available bowls are not manufactured to tight tuning tolerances and may not reliably produce the intended frequency interaction.
At Rainbow Sounds, our bowls are professionally tuned for therapeutic consistency – especially for brainwave entrainment applications. The F4 and G4 pair recommended above has been tested for ideal frequency alignment.
Explore Further
Shop the F4 and G4 Crystal Bowls
Learn Playing Techniques with Our Training Resources
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Disclaimer: While vibroacoustic therapy shows promising results, it should not be used as a substitute for medical treatment. Always consult your healthcare provider before beginning any new wellness practice, especially if you have a neurological condition.
