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An altered state of consciousness, also named altered state of mind is any condition which is significantly different from a normative waking beta wave state. The expression was coined by Charles Tart and describes induced changes in one's mental state, almost always temporary. A synonymous phrase is "altered states of awareness". An associated body of research has been conducted in trance and this is becoming the predominant auspice terminology. Trance includes all "altered states of consciousness" as well as the various forms of waking trance states.

An altered state of consciousness can come about accidentally through, for example, fever, sleep deprivation, fasting, oxygen deprivation, nitrogen narcosis (deep diving), or a traumatic accident.

It can sometimes be reached intentionally by the use of sensory deprivation, Isolation tank, or mind-control techniques, hypnosis, meditation, prayer, or disciplines (e.g. Mantra Meditation, Yoga, Sufism or Surat Shabda Yoga).

It can also be attained through the ingestion of psychoactive drugs such as alcohol and opiates, or psychoactive plants and chemicals such as LSD, DXM, 2C-I, peyote, marijuana, mescaline, Salvia divinorum, MDMA, psychedelic mushrooms, ayahuasca or datura (Jimson weed).

Another effective way to induce an altered state of consciousness is using a variety of Neurotechnology such as Hemi-Sync, psychoacoustics, Mind machines, light and sound stimulation, Cranial electrotherapy stimulation, and such; these methods attempt to induce specific brainwave patterns, and a particular altered state of consciousness.

Naturally occurring altered states of consciousness include dreams, lucid dreams, euphoria, ecstasy, psychosis as well as purported premonitions, out-of-body experiences, and channeling.^{[citation needed]}

Contents 1 Typology 2 See also 3 References 4 External links

The neutrality and factual accuracy of this section are disputed. Please see the relevant discussion on the talk page.

The following are the types of altered states of consciousness with the associated brainwave frequencies.

Alpha 12.39 ~ 9.9 Hertz (Hz) Start of Meditation

Low Alpha 9.89 ~ 8.2 Hz Inspiration, Mental Mediumship, Clairvoyance etc.

Theta 8.19 ~ 7.7 Hz Light Trance, Overshadowing

High Theta 7.69 ~ 7.1 Hz Partial Loss of Awareness

Theta 7 ~ 4.9 Hz Further Loss of Awareness

Low Theta 4.89 ~ 4.3 Hz Deeper Trance

Delta 4.29 ~ 3.9 Hz Out of Body Feeling

High Delta 3.89 ~ 3 Hz Spirit guides Controlling

Delta 2.9 ~ 1.5 Hz Passive Body

Low Delta 1.49 ~ 0.5 Hz Full Deep Trance

Panning 0.49 ~ 0.01 Hz Where Have You Gone?

• Castaneda, Carlos
• Eisner, Bruce
• Flow (psychology)
• Freedom of thought
• Gowan, John Curtis
• Hemi-Sync
• Huxley, Aldous
• Lilly, John C.
• Grof, Stanislav
• Leary, Timothy
• Lenard
• Meditation
• Mind machine
• Naranjo, Claudio
• Neurotheology
• Places of power
• Psychedelic drug
• Psychedelic experience
• Psychology of religion
• Psychonaut
• Tart, Charles
• Trance

• James, William The varieties of religious experience (1902) ISBN 0-14-039034-0
• Tart, Charles T., editor. Altered States of Consciousness (1969) ISBN 0-471-84560-4
• Tart, Charles T. States of Consciousness (2001) ISBN 0-595-15196-5
• Wier, Dennis R. Trance: from magic to technology (1995) ISBN 1-888428-38-4
• Hoffman, Kay (1998). The Trance Workbook: understanding & using the power of altered states. Translated by Elfie Homann, Clive Williams, and Dr Christliebe El Mogharbel. Translation edited by Laurel Ornitz. ISBN 0-8069-1765-2

Roberts, T. B. (editor) (2001). Psychoactive Sacramentals: Essays on Entheogens and Religion. San Francosco: Council on Spiritual Practices.

Roberts, T. B., and Hruby, P. J. (1995-2002). Religion and Psychoactive Sacraments An Entheogen Chrestomathy. Online archive. [1]

Roberts, T. B. "Chemical Input—Religious Output: Entheogens." Chapter 10 in Where God and Science Meet: Vol. 3: The Psychology of Religious Experience Robert McNamara (editor)(2006). Westport, CT: Praeger/Greenwood.

• HypnosisAndSuggestion.org exploring the science behind hypnosis and suggestion
• Explorations in Consciousness Online community dedicated to the exploration of consciousness through out-of-body experiences, lucid dreams and altered states of consciousness.
• Mind Media Guide to Hypnosis and Altered States
• Trance Meditation
• Dual-Induction Hypnosis, Guided Meditation