Altered states of consciousness can occur with or without the use of psychedelic substances and have been part of the human experience across cultures, throughout history.
Altered states of consciousness are an important component in many different traditional cultural practices, especially among Indigenous Peoples since Time Immemorial and continue to this day, and likewise within most religious and cultural traditions around the world, such as observing periods of fasting, dancing, meditative, and other practices.
Vaitl (2015, p. 14) has suggested five categories of altered states of consciousness:
Please ensure that you read through all items before proceeding by selecting each of the images for examples.
Daydreaming
Near-death experiences
Fasting
Sex
Music
Meditation
Cultural practices
Hypnosis
Epilepsy
Brain damage
Psychoactive substances
Since the provision of psychedelic-assisted therapy involves working with clients in alternate states of consciousness, personal experience with altered states of consciousness should be a prioritized health professional competency. Health professional experience with altered states of consciousness can help to build trust with clients and foster an environment where they feel more comfortable entering this new altered state guided by health professionals who have parallel lived experiences. Some experiences may include:
Prolonged meditation retreats
Breathwork
Invited to participate in drum, singing, or sweat-lodge ceremonies being led by Elders, Knowledge Keepers, or Indigenous community members
Solo wilderness journeys
Isolation tank immersion
Experiencing a psychedelic in a legal context where accessible
Health professional should take great caution not to overlay their own experiences with altered states of consciousness onto the client in order to avoid limiting what is possible for clients.
Vaitl, Dieter (2012). Veränderte Bewusstseinszustände: Grundlagen - Techniken - Phänomenologie. Schattauer.