Brain and body modulation

Brain Waves modulation

Our brains generate different types of electrical patterns known as brain waves, which are associated with different states of consciousness. These brainwaves can be measured by a procedure called electroencephalogram. Depending on the frequency, waves can be categorized as delta (1–4 Hz), theta (4–8 Hz), alpha (8–13 Hz) and beta (more than 13 Hz). Every category of waves are approximately related to different state of consciousness. Like, very low frequencies are associated with deep sleep, coma etc. The theta frequency is observed during low-level of alertness or drowsiness. 

A very specific type of theta called "frontal midline theta" appears during concentrated performance of mental tasks, that reflects focused attentional processing. Such tasks can be  mental calculation, working memory, error processing, and meditation.

Studies have shown positively valanced pieces of music (music containing consonant chords) tend to elicit a greater frontal midline theta [1]. Whereas Sonata K448 by Mozart has been found to cause significant increase in relative alpha band. 

Several other studies suggests, music can definitely change brainwave patterns and consequently, state of our consciousness. 

Default Mode Network (DMN)

The Default Mode Network is a network of brain regions that becomes active when we are at rest and engaged in self-reflection or mind-wandering. It's activity is reduced during active goal oriented tasks, like driving a car. Results of a study indicates that meditation is associated with reduced activations in the default mode network relative to an active task in meditators [2]. By calming the DMN, during relaxed state, one becomes less susceptible to mind wandering and complex self related thoughts. This facilitates a state of present-moment awareness and a sense of inner peace. Sound meditation and sound bath can quiet the DMN, resulting in deep meditative state.

Neuroplasticity

Neuroplasticity refers to the brain's ability to reorganize and form new connections throughout life in response to experiences.

Engaging in sound meditation and sound bath may promote neuroplasticity by stimulating neural pathways associated with relaxation and well-being.

Studies suggest that regular practice of meditation can enhance neuroplasticity, specifically through the mechanisms of relaxation and training of attention [3] . A research found, long-term meditation practitioners had actually altered the structure and function of their brains [4].

The Limbic System

The limbic system, a group of brain structures, plays a crucial role in emotional processing and regulation.

Sound-based practices can modulate the activity of the limbic system, leading to a reduction in stress and anxiety responses.

The soothing sounds experienced during sound meditation and sound bath activate brain regions associated with relaxation and emotional well-being. Meditation helps directing the attention towards a limbic pathway for present-moment sensory awareness, that appears to reduce automatic negative self-evaluation, increase tolerance for negative affect and pain [5]. 

Autonomic Nervous System

Chronic stress can have detrimental effects on physical and mental health.

Sound meditation and sound bath have been found to activate the parasympathetic branch of the autonomic nervous system, responsible for the relaxation response.

This activation results in a decrease in heart rate, blood pressure, and cortisol levels, promoting a state of deep relaxation and stress reduction. A number of studies have reported that listening to sedative music (i.e., slow tempo, legato phrasing, minimal dynamic contrasts) can lead to decreased heart rate, respiration rate, and blood pressure [6]. Such a state is ideal for inducing meditative mind.

Meditation modulates your nervous system

Through the lens of neuroscience, we can understand how sound meditation and sound bath impact the brain, promoting relaxation, stress reduction, and overall well-being. By influencing brain wave activity, modulating neural networks, and engaging the limbic system and autonomic nervous system, these practices offer a scientifically grounded pathway to tranquility and self-discovery. So, immerse yourself in the healing sounds and let your brain bask in the harmonious melodies that lead to inner peace.

References

1. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6130927/

2. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4529365/

3. https://www.duo.uio.no/bitstream/handle/10852/18009/Hovedoppgave.pdf?sequence=1

4. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2944261/?_escaped_fragment_=po=77.2727

5. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3303604/

6. https://online.ucpress.edu/mp/article-abstract/27/4/317/62457/Music-and-Autonomic-Nervous-System-Dys-Function