For centuries, sound healing has been used across cultures - to cure mental disorders, vanquish evil spirits and heal the sick. In the 1940s the US military used music as part of the recuperation programme for army personnel - the birth of sound therapy! Today it is used in many different areas and evidence suggest that it brings great benefit to our emotional and psychological health.
Sound waves are converted into electrical signals when they reach our ears. These then travel through the auditory nerve into the auditory cortex - the part of the brain that processes sound - where they trigger responses (emotional, hormonal etc.) in our bodies: like the release of dopamine and oxytocin (a natural painkiller and hormone that triggers bonding with others). Research has shown that the brains of musicians are different, more symmetrical, and that those parts of the brain responsible for motor and cognitive functioning, coordination, and reasoning, are significantly larger. The two hemispheres are also better connected.
Numerous studies suggest that music changes our brains and our bodies, reduces stress and improves moods, makes us more productive and creative, aids language development, communication, memory and IQ. It is a truly fascinating and humbling tool.