Synchronisation / Effet d’entrainement
Effet d'entraînement par le son
Fait référence à la synchronisation d'un organisme à un rythme extérieur à lui-même. Le meilleur exemple est le corps humain en relation danse/musique (comme taper du pied au rythme d'une chanson). Par ailleurs, lors d'une activité physique, il a été démontré que le fait d'écouter de la musique dont les BPM (battements par minute) augmentent au même rythme que votre fréquence cardiaque vous assure un échauffement plus efficace. C'est le principe de synchronisation (entrainment) qui explique pourquoi il est possible d'induire des états de concentration, de méditation profonde et de transe grâce à un tambour au rythme constant.
Extrait tiré du livre : Healing Sounds, The Power of Harmonics de Jonathan Goldman
« The different rhythms of the body may also be changed through sound. This is known as « entrainment» and involves the ability of the more powerful rhythmic vibrations of one objects to change the less powerful rhythmic vibrations of another object and cause them to synchronize their rhythms with the first object. Through sound it is possible to change the rhythms of our brainwaves, as well as our heart beat and respiration.
Different brainwave rates have been equated to different state of consciousness .There are four basic categories of brainwaves, based upon cycles per second (hertz or hz), the measurements given to sound. They are :
Beta waves - from 14 to 20 hz, which are found in our normal waking state of consciousness.
Alpha waves - from 8 to 13 hz, which occur when we daydream or meditate.
Theta waves - from 4 to 7 hz, which occur in states of deep meditation and sleep, as well as in shamanic activity.
Delta waves - from 0,5 to 3 hz, which occur in deep sleep and have been found in very profound states of meditation and healing.
The use of music in sacred ceremonies and shamanic rituals has occurred since ancient times. It has recently been verified that sound can be used to effect and change our brainwaves. The changing of these rates creates changes in consciousness, allowing mystically altered states to be induced.
These principles of using resonance and entrainment are the fundamental concepts behind the use of sound to heal and transform. They are found in every practice that uses sound regardless of the tradition, belief system or culture. Many times those utilizing sound for spiritual or magical purposes may not be aware of them. But examination of these practices, from the Hindu use of mantras to shamanic use of chanting and drumming, reveals a commonality in these principles of resonance and entrainment as the basis of sonic transformation and healing. »