A modular floor unit uses bone-conduction transducers to convert a slow, two-tone singing bowl tone into vibration felt through the platform.
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Why breathwork?
Breath is the one autonomic function also open to voluntary control, which makes it the only part of this the person themselves does. It is also the most direct access anyone has to their own interoceptive state.
What is established about breath
Slow, paced breathing has a well-established effect on cardiovascular and autonomic physiology. A large systematic review and meta-analysis covering 223 studies found that voluntary slow breathing increases vagally mediated heart rate variability during breathing, immediately afterward, and following repeated practice. (PubMed)
Around six breaths per minute is commonly used because it falls near the resonance frequency of the cardiovascular system for many adults. At this pace, breathing becomes strongly coupled with fluctuations in heart rate and blood pressure, increasing respiratory sinus arrhythmia and engaging the baroreflex, an important mechanism for regulating blood pressure. Individual resonance frequency varies, so six breaths per minute is a useful reference point rather than a universal optimum. (PubMed)
Slow breathing also changes the relationship between respiration, cardiovascular activity, and the nervous system. Reviews have found changes in heart rate variability, respiratory sinus arrhythmia, and other measures of autonomic regulation, along with changes in central nervous system activity. (PubMed)
Why vibration quiets the thinking mind
The thinking mind is constantly processing thoughts, memories, plans, language, and images.
Vibration is the bridge back to the body. Felt directly through the skin, muscle, and tissue, it gives attention a clear sensory signal to follow.
As attention moves from thought into sensation, mental activity becomes less dominant. The mind has somewhere else to go.
Vibration is the bridge from thought to sensation.
What mechanical coupling means
Mechanical coupling is the physical process by which vibration in the environment is transmitted into the body.
When a vibrating surface contacts the body, its movement is transferred through the skin and underlying tissues. The resulting mechanical deformation is detected by specialized sensory receptors called mechanoreceptors, which convert that physical movement into neural activity. This conversion is known as mechanotransduction. Mechanotransduction is the process by which cells convert mechanical forces into electrical or chemical signals.
The nervous system cannot directly "read" physical movement. When tissue is stretched, compressed, bent, or vibrated, that mechanical force changes the shape or tension of specialized sensory cells. Mechanically sensitive ion channels in those cells can respond to that deformation, allowing charged particles to flow across the cell membrane and changing its electrical state.
In sensory systems, this provides the first step from physical movement to neural information. A vibration can deform tissue; that deformation changes the activity of mechanosensitive receptors; the resulting electrical signals are transmitted through sensory neurons and eventually processed by the nervous system.
This mechanism underlies several forms of sensation, including touch, pressure, vibration, hearing, balance, and proprioception.
Mechanotransduction is therefore the biological conversion of mechanical energy into information that the nervous system can use.
