Konopacki Mateusz, Madison Guy, EEG Responses to Shamanic Drumming. Does the Suggestion of Trance State Moderate the Strength of Frequency Components?, Journal of Sleep and Sleep Disorder Research, Volume 1, Issue 2, 2018, Pages 16-25, ISSN 2574-4518, https://doi.org/10.14302/issn.2574-4518.jsdr-17-1794. (https://jndc-chemistryarticles.infojsdr/article/671) Keywords: EEG; trance state; shamanic drumming; music therapy