Vibrational Sound Therapy
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Relaxation is not only a physical state but also a state of consciousness, and VST has very strong effects on alertness and perception. Relaxation during a VST session brings on the same kind of brain states as yoga, tai chi, and meditation. It is very important to understand the physiological responses to relaxation and how they relate to state of mind in order to react and respond in kind to your client. This kind of observation is part of the greater system of communication and feedback that is so vital to any form of sound therapy.
Most clients will start to relax as soon as the session begins. Their muscles will lose tension, and they may even start to slip into the alpha brain wave pattern within the first minutes. The alpha wave pattern is associated with daydreaming and pre-sleep. At this point the clients breathing and heart rate will start to slow down, and the body will begin to absorb the waves of vibration into its tissues. The slowing of breathing and lack of muscle tension are both signs that the metabolism is slowing. Insulin levels will rise, and cortisol levels will fall. As the heart rate slows, blood pressure falls and arteries expand giving rise to a feeling of warmth. This relaxed state allows the body to repair itself instead of responding to outside concerns. The immune system is at its best when we are relaxed.
VST is so gentle and relaxing that almost all people will fall asleep at some point during the session. The theta brain wave state is associated with meditation, sleep, and deep relaxation. The delta brain state is a deeper form of sleep and is also associated with hypnosis and ritual. During normal sleep, people will oscillate between both of these states. The brain wave state of clients undergoing a sound massage will change naturally and in reaction to the modality as positions are changed and different bowls are introduced.