This project seeks to understand the neural underpinnings of rhythm-induced trance. Rhythmic drumming has been used, throughout history and across cultures, to induce trance and promote insight, but little is known about the underlying neural mechanisms. Following up on my earlier fMRI study of rhythm-induced trance, this project uses EEG to assess brain network activity and auditory gating in experienced shamanic practitioners. Participants listen to rhythmic drumming, and enter an absorptive trance state or remain in a normal state. The findings should help us understand the neural underpinnings of rhythm-induced trance, and why rhythmic drumming and music are commonly used to alter consciousness and promote insight.