Ethno Therapy, Music and Trance: An EEG Investigation into a Sound-Trance Induction

Music has been used since ancient times in healing rituals. It has been played for people to induce altered states of consciousness (ASC), which change the focus of attention, mood, and thoughts about the world and the self. Music and altered states are connected in various ways concerning context, personal set, socio-ecological setting, and cultural beliefs. Discussion is ongoing as to whether music itself induces the changes via a “trance mechanism” or whether the setting and rituals connected to music are responsible for the induction of ASC. The authors conducted an explorative attempt to represent interdependencies of set and setting, sound and trance through electrophysiological corre…