Electroencephalogram characteristics during possession trances in healthy individuals.

ABSTRACT: Despite intensive studies on cerebral activity during trances involving tranquil arousal states, there are little data on physiological basis of naturally induced possession trances involving hyperarousal active states because of the difficulty of gathering data from participants within a natural cultural context in the field. We investigated the characteristics of electroencephalograms (EEGs) that were specific for naturally induced possession trances involving hyperarousal states in actual rituals. We measured the EEG signals of 12 healthy participants, seven with trance and five without trance, before, during, and after a dedicatory ritual drama in Bali, Indonesia, using a custom-modified field telemetry system. During trance, θ (4-7.5 Hz), α-1 (8-9.5 Hz), α-2 (10-12.5 Hz), and β (13-30

SUBMITTER: Kawai N 

PROVIDER: S-EPMC5610563 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature