THE SCIENCE OF
SOUND
At Nāda Sound Spa, we integrate science-backed techniques to create sound journeys that support whole-system recalibration.
Jen McCrea, Founder
HOW SOUND AFFECTS THE BODY AND BRAIN
Brainwave Entertainment
Rhythmic, harmonic sounds can shift the brain from high-frequency beta waves (linked to active thinking and stress) into slower alpha and theta waves associated with deep relaxation, meditation, and clarity.
Nervous System Regulation
Specific sound frequencies activate the vagus nerve, helping to switch on the parasympathetic nervous system (rest-and-digest mode). This lowers cortisol levels, supports digestion, and promotes a state of physiological calm.
Cellular Resonance
Each part of the body has its own optimal frequency - like instruments in an orchestra. Prolonged stress or trauma can cause your cells to fall out of harmony with each other which can manifest physically, mentally and emotionally. Vibrational sound therapy helps to "retune" these cells and systems, encouraging a return to balance, flow, and optimal functioning.
Neurochemical Support
Sound exposure has been linked to the release of neurotransmitters and hormones like serotonin, dopamine, and oxytocin – all of which enhance mood, reduce anxiety, and increase a sense of connection.
Documented Benefits of Sound Therapy
Scientific research and clinical observations have shown that intentional sound therapy can lead to:
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Lowered cortisol and reduced stress
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Improved sleep quality and rest
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Decreased pain perception
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Increased emotional regulation and mental clarity
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Enhanced immune function (through improved vagal tone)
Nāda’s Therapeutic Approach
We design each sound journey with intention, precision, and care. Our instruments are chosen for their resonance, tone, and ability to support nervous system healing:
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Cello: deep, grounding frequencies that calm and stabilise
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Handpan: hypnotic, melodic tones that soothe the mind
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Singing bowls: crystal and metal bowls that shift brainwaves and create vibrational alignment
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Flutes and chimes: soft, high-frequency instruments to open the heart and settle the system
Who is sound healing for?
You don’t need to understand the science to feel the shift.
Sound therapy is for anyone who wants to:
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Recover from stress and burnout
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Sleep better and feel more rested
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Process emotions without talking
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Regulate their nervous system
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Reconnect with inner peace
It’s also a powerful modality for founders, leaders, and teams under pressure who need to reset and return to clarity.
Refrences & Research
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Xiao et al. (2023) – Music therapy significantly enhanced autonomic nervous system regulation in minimally conscious patients. [DOI link](https://doi.org/10.3389/fnins.2023.1182181)
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Ngo et al. (2013) – Rhythmic 0.8 Hz sound stimulation during sleep entrained endogenous slow‑wave brain oscillations. [DOI link](https://doi.org/10.1111/j.1365-2869.2012.01039.x)
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O’Kelly et al. (2013) – Music therapy elicited measurable neurophysiological and behavioral responses in vegetative/minimally conscious patients. [DOI link](https://doi.org/10.3389/fnhum.2013.00884)
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Lai & Chao (2019). – “The Effects of Music on Vagal Tone*. Alternative Therapies in Health and Medicine, 25(4), 22–25. – Music increased heart-rate variability and improved parasympathetic activation. [Peer‑reviewed]
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Harvard Health (Oct 2023) – “Music as Medicine.”– Music activates the limbic system to elicit the relaxation response: calmer breathing and heart rate.
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Harvard Health Blog (Nov 2010) – “Using the relaxation response” – Dr. Herbert Benson’s relaxation response model, often activated by music, slows breathing and reduces blood pressure.
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Chanda & Levitin (2013). --“The neurochemistry of music”. Trends in Cognitive Sciences, 17(4), 179–193. – Reviews how sound modulates dopamine, cortisol, oxytocin, and immune markers.
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LaGasse (2015) - “The neurochemistry and social flow of singing: bonding and oxytocin”. Frontiers in Human Neuroscience, 9, 518. – Finds group singing boosts oxytocin and lowers ACTH (stress hormone).
The science matters — but the real evidence is in how you feel.
Join us for a sound journey and experience it for yourself.
Letters from the sanctuary
Reflections on inner peace, intentional living, and the art of slowing down. You’ll also receive early access to our sound baths, meditations, and healing resources. We honour your peace, and only send what nourishes it.