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A psychedelic experience (known colloquially as a trip) is a temporary altered state of consciousness induced by the consumption of a psychedelic substance (most commonly LSD, mescaline, psilocybin mushrooms, or DMT).[ citation needed ] For example, an acid trip is a psychedelic experience brought on by the use of LSD, while a mushroom trip is a psychedelic experience brought on by the use of psilocybin. Psychedelic experiences feature alterations in normal perception such as visual distortions and a subjective loss of self-identity, sometimes interpreted as mystical experiences. Psychedelic experiences lack predictability, as they can range from being highly pleasurable (known as a good trip) to frightening (known as a bad trip). The outcome of a psychedelic experience is heavily influenced by the person's mood, personality, expectations, and environment (also known as set and setting). [1]
Researchers have interpreted psychedelic experiences in light of a range of scientific theories, including model psychosis theory, filtration theory, psychoanalytic theory, entropic brain theory, integrated information theory, and predictive processing. Psychedelic experiences are also induced and interpreted in religious and spiritual contexts.
The term psychedelic was coined by the psychiatrist Humphrey Osmond during written correspondence with author Aldous Huxley and presented to the New York Academy of Sciences by Osmond in 1957. [2] It is derived from the Greek words ψυχή, psychḗ, 'soul, mind' and δηλείν, dēleín, 'to manifest' thus meaning "mind manifesting," the implication being that psychedelics can develop unused potentials of the human mind. [3] The term trip was first coined by US Army scientists during the 1950s when they were experimenting with LSD. [4]
Despite several attempts that have been made, starting in the 19th and 20th centuries, to define common phenomenological structures of the effects produced by classic psychedelics, a universally accepted taxonomy does not yet exist. [5] [6]
A prominent element of psychedelic experiences is visual alteration. [5] Psychedelic visual alteration often includes spontaneous formation of complex flowing geometric visual patterning in the visual field. [6] When the eyes are open, the visual alteration is overlaid onto the objects and spaces in the physical environment; when the eyes are closed the visual alteration is seen in the "inner world" behind the eyelids. [6] These visual effects increase in complexity with higher dosages, and also when the eyes are closed. [6] The visual alteration does not normally constitute hallucinations, because the person undergoing the experience can still distinguish between real and imagined visual phenomena, though in some cases, true hallucinations are present. [5] More rarely, psychedelic experiences can include complex hallucinations of objects, animals, people, or even whole landscapes. [5] Visual alterations also include other effects such as afterimages, shifting of color hues, and pareidolia.
A number of studies by Roland R. Griffiths and other researchers have concluded that high doses of psilocybin and other classic psychedelics trigger mystical experiences in most research participants. [7] [8] [9] [10] Mystical experiences have been measured by a number of psychometric scales, including the Hood Mysticism Scale, the Spiritual Transcendence Scale, and the Mystical Experience Questionnaire. [10] The revised version of the Mystical Experience Questionnaire, for example, asks participants about four dimensions of their experience, namely the "mystical" quality, positive mood such as the experience of amazement, the loss of the usual sense of time and space, and the sense that the experience cannot be adequately conveyed through words. [10] The questions on the "mystical" quality in turn probe multiple aspects: the sense of "pure" being, the sense of unity with one's surroundings, the sense that what one experienced was real, and the sense of sacredness. [10] Some researchers have questioned the interpretation of the results from these studies and whether the framework and terminology of mysticism are appropriate in a scientific context, while other researchers have responded to those criticisms and argued that descriptions of mystical experiences are compatible with a scientific worldview. [11] [12] [13]
A group of researchers concluded in a 2011 study that psilocybin "occasions personally and spiritually significant mystical experiences that predict long-term changes in behaviors, attitudes and values". [14]
Some research has found similarities between psychedelic experiences and non-ordinary forms of consciousness experienced in meditation [15] and near-death experiences. [16] The phenomenon of ego dissolution is often described as a key feature of the psychedelic experience. [17] [18] [19]
Individuals who have psychedelic experiences often describe what they experienced as "more real" than ordinary experience. For example, the psychologist Benny Shanon, after observing ayahuasca trips, referred to "the assessment, very common with ayahuasca, that what is seen and thought during the course of intoxication defines the real, whereas the world that is ordinarily perceived is actually an illusion." [20] Similarly, the psychiatrist Stanislav Grof described the LSD experience as "complex revelatory insights into the nature of existence… typically accompanied by a sense of certainty that this knowledge is ultimately more relevant and 'real' than the perceptions and beliefs we share in everyday life." [21]
A "bad trip" is a highly unpleasant psychedelic experience. [5] [22] A bad trip on psilocybin, for instance, often features intense anxiety, confusion, agitation, or even psychotic episodes. [23] Bad trips can be connected to the anxious ego-dissolution (AED) dimension of the APZ questionnaire used in research on psychedelic experiences. [5] As of 2011, exact data on the frequency of bad trips are not available. [23] Some research suggests that the risk of a bad trip on psilocybin is higher when multiple drugs are used, when the user has a history of certain mental illnesses, and when the user is not supervised by a sober person. [22]
In clinical research settings, precautions including the screening and preparation of participants, the training of the session monitors who will be present during the experience, and the selection of appropriate physical setting can minimize the likelihood of psychological distress. [24] Researchers have suggested that the presence of professional "trip sitters" (i.e., session monitors) may significantly reduce the negative experiences associated with a bad trip. [25] In most cases in which anxiety arises during a supervised psychedelic experience, reassurance from the session monitor is adequate to resolve it; however, if distress becomes intense it can be treated pharmacologically, for example with the benzodiazepine diazepam. [24]
Research shows that preparing for the psychedelic experience, as well as the set and setting of the individual and environment they will be in, can help mitigate "bad trips''. [26] [27] Harvard Psychologist Timothy Leary has said that "set" and "setting" are important to the experience. [26] [27] [28] Set refers to the participants' internal state – their mental, emotional and physical state, as well as their intentions for the experience (whether they want to solve a complex problem, discover the underlying secrets of the universe, or heal from a past trauma) – the better these preliminary conditions, the better the experience usually goes. [26] [27] Setting refers to the environment the experience will take place in. Leary and others have found that, due to the highly suggestible nature of the psychedelic experience, the environment the participant is in plays a critical role. [26] [27] [29] For example, a warmly decorated room with a comfortable couch, nice music and an overall welcoming atmosphere will have a much more positive effect than a cold stainless steel and concrete reinforced hospital room. [26] [27] Taking these necessary precautions before a psychedelic experience, along with the presence of trained professionals, have been shown to significantly reduce an overall negative experience. [26] [27]
The psychiatrist Stanislav Grof wrote that unpleasant psychedelic experiences are not necessarily unhealthy or undesirable, arguing that they may have potential for psychological healing and lead to breakthrough and resolution of unresolved psychic issues. [30] [ page needed ] Drawing on narrative theory, the authors of a 2021 study of 50 users of psychedelics found that many described bad trips as having been sources of insight or even turning points in life. [25]
Link R. Swanson divides scientific frameworks for understanding psychedelic experiences into two waves. In the first wave, encompassing nineteenth- and twentieth-century frameworks, he includes model psychosis theory (the psychotomimetic paradigm), filtration theory, and psychoanalytic theory. [6] In the second wave of theories, encompassing twenty-first-century frameworks, Swanson includes entropic brain theory, integrated information theory, and predictive processing. [6]
Researchers studying mescaline in the early twentieth century and LSD in the mid-twentieth century took interest in these drugs as producing a temporary "model psychosis" that could assist researchers and medical students in understanding the experiences of patients with schizophrenia and other psychotic disorders. [31]
Aldous Huxley and Humphrey Osmond applied the pre-existing ideas of filtration theory, which held that the brain filters what enters into consciousness, to explain psychedelic experiences (and it is from this paradigm that the term psychedelic is derived). [6] Huxley believed that the brain was filtering reality itself and that psychedelics granted conscious access to "Mind at Large," whereas Osmond believed that the brain was filtering aspects of the mind out of consciousness. [6] Swanson writes that Osmond's view seems "less radical, more compatible with materialist science, and less epistemically and ontologically committed" than Huxley's. [6]
Psychoanalytic theory was the predominant interpretive framework in mid-twentieth-century psychedelic-assisted psychotherapy. [6] For instance, Czech psychiatrist Stanislav Grof characterised psychedelic experiencing as "non-specific amplification of unconscious mental processes", and he analysed the phenomenology of the LSD experience (particularly the experience of what he termed psychospiritual death and rebirth) in terms of Otto Rank's theory of the unresolved memory of the primal birth trauma. [32]
Entropic brain theory is a theory of consciousness proposed in 2014 by neuroscientist Robin Carhart-Harris and colleagues that was inspired by research on psychedelic drugs. [33]
Integrated information theory is a theory of consciousness proposing to explain all forms of consciousness, and has been applied specifically to psychedelic experiences by Andrew Gallimore. [34]
Sarit Pink-Hashkes and colleagues have applied the predictive processing paradigm in neuroscience to psychedelic experiences in order to formalize the idea of the entropic brain. [35]
Alan Watts likened psychedelic experiencing to the transformations of consciousness that are undertaken in Taoism and Zen, which he says is, "more like the correction of faulty perception or the curing of a disease… not an acquisitive process of learning more and more facts or greater and greater skills, but rather an unlearning of wrong habits and opinions." [36] Watts further described the LSD experience as, "revelations of the secret workings of the brain, of the associative and patterning processes, the ordering systems which carry out all our sensing and thinking." [37]
According to Luis Luna, psychedelic experiences have a distinctly gnosis-like quality; it is a learning experience that elevates consciousness and makes a profound contribution to personal development. For this reason, the plant sources of some psychedelic drugs such as ayahuasca and mescaline-containing cacti are sometimes referred to as "plant teachers" by those using those drugs. [38]
Furthermore, psychedelic drugs have a history of religious use across the world that extends back for hundreds or perhaps thousands of years. [39] They are often called entheogens because of the kinds of experiences they can induce, [40] however various entheogens happen to also be hypnotics (muscimol mushrooms), deliriants ( jimsonweed ) or atypical/quasi-psychedelics like cannabis. Some small contemporary religious movements base their religious activities and beliefs around psychedelic experiences, such as Santo Daime [41] and the Native American Church. [42]
N,N-Dimethyltryptamine is a substituted tryptamine that occurs in many plants and animals, including humans, and which is both a derivative and a structural analog of tryptamine. DMT is used as a psychedelic drug and prepared by various cultures for ritual purposes as an entheogen.
Lysergic acid diethylamide, commonly known as LSD, and known colloquially as acid or lucy is a potent psychedelic drug. Effects typically include intensified thoughts, emotions, and sensory perception. At sufficiently high dosages LSD manifests primarily mental, visual, and auditory hallucinations. Dilated pupils, increased blood pressure, and increased body temperature are typical. Effects typically begin within half an hour and can last for up to 20 hours. LSD is also capable of causing mystical experiences and ego dissolution. It is used mainly as a recreational drug or for spiritual reasons. LSD is both the prototypical psychedelic and one of the "classical" psychedelics, being the psychedelic with the greatest scientific and cultural significance. LSD is synthesized as a solid compound, typically in the form of a powder or a crystalline material. This solid LSD is then dissolved in a liquid solvent, such as ethanol or distilled water, to create a solution. The liquid serves as a carrier for the LSD, allowing for accurate dosage and administration onto small pieces of blotter paper called tabs. LSD is typically either swallowed or held under the tongue. In pure form, LSD is clear or white in color, has no smell, and is crystalline. It breaks down with exposure to ultraviolet light.
Psilocybin is a naturally occurring psychedelic prodrug compound produced by more than 200 species of fungi. The most potent are members of genus Psilocybe, such as P. azurescens, P. semilanceata, and P. cyanescens, but psilocybin has also been isolated from about a dozen other genera. Psilocybin is itself biologically inactive but is quickly converted by the body to psilocin, which has mind-altering effects similar, in some aspects, to those of lysergic acid diethylamide (LSD), mescaline, and dimethyltryptamine (DMT). In general, the effects include euphoria, visual and mental hallucinations, changes in perception, distorted sense of time, and perceived spiritual experiences. It can also cause adverse reactions such as nausea and panic attacks.
Psychedelics are a subclass of hallucinogenic drugs whose primary effect is to trigger non-ordinary mental states and an apparent expansion of consciousness. Also referred to as classic hallucinogens or serotonergic hallucinogens, the term psychedelic is sometimes used more broadly to include various types of hallucinogens, such as those which are atypical or adjacent to psychedelia like salvia and MDMA, respectively. This article makes use of the narrower classical definition of psychedelics. Classic psychedelics generally cause specific psychological, visual, and auditory changes, and oftentimes a substantially altered state of consciousness. They have had the largest influence on science and culture, and include mescaline, LSD, psilocybin, and DMT.
A bad trip is a term describing an acute adverse psychological reaction to effects produced under the influence of psychoactive substances, namely hallucinogens. With proper screening, preparation, and support in a regulated setting these are usually benign. A bad trip on psilocybin, for instance, often features intense anxiety, confusion, agitation, and psychosis. They manifest as a range of feelings, such as anxiety, paranoia, the unshakeable sense of one's inevitable and imminent personal demise or states of unrelieved terror that they believe will persist after the substance's effects have worn off. As of 2011, exact data on the frequency of bad trips are not available.
An altered state of consciousness (ASC), also called altered state of mind or mind alteration, is any condition which is significantly different from a normal waking state. By 1892, the expression was in use in relation to hypnosis, though there is an ongoing debate as to whether hypnosis is to be identified as an ASC according to its modern definition. The next retrievable instance, by Max Mailhouse from his 1904 presentation to conference, however, is unequivocally identified as such, as it was in relation to epilepsy, and is still used today. In academia, the expression was used as early as 1966 by Arnold M. Ludwig and brought into common usage from 1969 by Charles Tart. It describes induced changes in one's mental state, almost always temporary. A synonymous phrase is "altered state of awareness".
Entheogens are psychoactive substances that induce alterations in perception, mood, consciousness, cognition, or behavior for the purposes of engendering spiritual development or otherwise in sacred contexts. Anthropological study has established that entheogens are used for religious, magical, shamanic, or spiritual purposes in many parts of the world. Entheogens have traditionally been used to supplement many diverse practices geared towards achieving transcendence, including divination, meditation, yoga, sensory deprivation, asceticism, prayer, trance, rituals, chanting, imitation of sounds, hymns like peyote songs, drumming, and ecstatic dance. The psychedelic experience is often compared to non-ordinary forms of consciousness such as those experienced in meditation, near-death experiences, and mystical experiences. Ego dissolution is often described as a key feature of the psychedelic experience.
Stanislav "Stan" Grof is a Czech-born psychiatrist who has been living in the United States since the 1960s. Grof is one of the principal developers of transpersonal psychology and research into the use of non-ordinary states of consciousness for purposes of psychological healing, deep self-exploration, and obtaining growth and insights into the human psyche. In 1993, Grof received an Honorary Award from the Association for Transpersonal Psychology (ATP) for major contributions to and development of the field of transpersonal psychology, given at the occasion of the 25th Anniversary Convocation held in Asilomar, California. He also received the VISION 97 award granted by the Foundation of Dagmar and Václav Havel in Prague on October 5, 2007. In 2010, he received the Thomas R. Verny Award from the Association for Pre- and Perinatal Psychology and Health (APPPAH). On the other hand, Grof has been criticized by the skeptic group Český klub skeptiků Sisyfos in the Czech Republic for furthering what they view as nonscientific psychology too far outside the bounds of the materialistic philosophical underpinnings of modern science. He is the only person to have been awarded the anti-prize Erratic Boulder Award twice in that country. Grof was married to psychologist Brigitte Grof in 2016.
Psychedelic therapy refers to the proposed use of psychedelic drugs, such as psilocybin, MDMA, LSD, and ayahuasca, to treat mental disorders. As of 2021, psychedelic drugs are controlled substances in most countries and psychedelic therapy is not legally available outside clinical trials, with some exceptions.
Richard Elliot Doblin is an American drug activist and executive who is the founder and former executive director of the Multidisciplinary Association for Psychedelic Studies (MAPS).
Hallucinogen persisting perception disorder (HPPD) is a non-psychotic disorder in which a person experiences apparent lasting or persistent visual hallucinations or perceptual distortions after a previous use of drugs, including but not limited to psychedelics, dissociatives, entactogens, tetrahydrocannabinol (THC), and SSRIs. Despite being designated as a hallucinogen-specific disorder, the specific contributory role of psychedelic drugs is unknown.
The Marsh Chapel Experiment, also called the "Good Friday Experiment", was an experiment conducted on Good Friday, April 20, 1962 at Boston University's Marsh Chapel. Walter N. Pahnke, a graduate student in theology at Harvard Divinity School, designed the experiment under the supervision of Timothy Leary, Richard Alpert, and the Harvard Psilocybin Project. Pahnke's experiment investigated whether psilocybin would act as a reliable entheogen in religiously predisposed subjects.
The Beckley Foundation is a UK-based think tank and UN-accredited NGO, dedicated to activating global drug policy reform and initiating scientific research into psychoactive substances. The foundation is a charitable trust which collaborates with leading scientific and political institutions worldwide to design and develop research and global policy initiatives. It also investigates consciousness and its modulation from a multidisciplinary perspective, working in collaboration with scientists. The foundation is based at Beckley Park near Oxford, United Kingdom. It was founded in 1998, and is directed by Amanda Feilding, Countess of Wemyss.
Ego death is a "complete loss of subjective self-identity". The term is used in various intertwined contexts, with related meanings. Jungian psychology uses the synonymous term psychic death, referring to a fundamental transformation of the psyche. In death and rebirth mythology, ego death is a phase of self-surrender and transition, as described by Joseph Campbell in his research on the mythology of the Hero's Journey. It is a recurrent theme in world mythology and is also used as a metaphor in some strands of contemporary western thinking.
Amanda Claire Marian Charteris, Countess of Wemyss and March, also known as Amanda Feilding, is an English drug policy reformer, lobbyist, and research coordinator. In 1998, she founded the Foundation to Further Consciousness, later renamed to the Beckley Foundation, a charitable trust which initiates, directs, and supports neuroscientific and clinical research into the effects of psychoactive substances on the brain and cognition. She has also co-authored over 50 papers published in peer-reviewed journals, according to the Foundation. The central aim of her research is to investigate new avenues of treatment for such mental illnesses as depression, anxiety, and addiction, as well as to explore methods of enhancing well-being and creativity.
The stoned ape theory is a controversial theory first proposed by American ethnobotanist and mystic Terence McKenna in his 1992 book Food of the Gods. The theory claims that the transition from Homo erectus to Homo sapiens and the cognitive revolution was caused by the addition of psilocybin mushrooms, specifically the mushroom Psilocybe cubensis, into the human diet around 100,000 years ago. Using evidence largely based on studies from Roland L. Fischer et al. from the 1960s and 1970s, he attributed much of the mental strides made by humans during the cognitive revolution to the effects of psilocybin intake found by Fischer.
Hallucinogens are a large and diverse class of psychoactive drugs that can produce altered states of consciousness characterized by major alterations in thought, mood, and perception as well as other changes. Most hallucinogens can be categorized as either being psychedelics, dissociatives, or deliriants.
Roland Fischer was an experimental researcher and psychopharmacologist known for his early work on psychedelic drugs, schizophrenia, the perception-hallucination continuum model of altered states of consciousness, and for his work on gustation which later contributed to research supporting supertasting. Fischer was formerly professor of experimental psychiatry and associate professor of pharmacology at Ohio State University (1958-1971), and also held academic posts at George Washington University, Georgetown and Johns Hopkins University.
Psychoplastogens are a group of small molecule drugs that produce rapid and sustained effects on neuronal structure and function, intended to manifest therapeutic benefit after a single administration. Several existing psychoplastogens have been identified and their therapeutic effects demonstrated; several are presently at various stages of development as medications including Ketamine, MDMA, Scopolamine, and the serotonergic psychedelics, including LSD, psilocin, DMT, and 5-MeO-DMT. Compounds of this sort are being explored as therapeutics for a variety of brain disorders including depression, addiction, and PTSD. The ability to rapidly promote neuronal changes via mechanisms of neuroplasticity was recently discovered as the common therapeutic activity and mechanism of action.
Robin Lester Carhart-Harris is a British psychopharmacologist who is Ralph Metzner Distinguished Professor in the Department of Neurology at the University of California, San Francisco. Previously, he founded and was Head of the Centre for Psychedelic Research at Imperial College London.
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