Phenomenology
Effects as people report, practise and measure them, in one shared vocabulary that every plant profile in the archive grades.
The vocabulary groups its effects in domains, from what is seen to how the self and other beings are met. Each effect is attested plant by plant, from up to seven kinds of evidence, and graded under the archive’s evidence standard. An effect with its own entry gathers those attestations into one account: the reports, measurements, traditions and open interpretations across the archive.
26 effects8 domains2 entries210 attested profile rows23 plant profiles
01Reading the index
Each effect below carries its definition and, where one corresponds, its nearest factor on the Altered States of Consciousness Rating Scale (Studerus, Gamma and Vollenweider, 2010) and its type in Shanon’s structural typology of ayahuasca visions (Shanon, 2002). Beneath it are the plants whose profiles attest it. Each square shows the grade of that plant’s strongest attestation, and each name opens the profile row, where the sources are given. Plants whose profiles record the effect as not established are listed separately.
Grades apply to what is reported, measured and practised, never to what an experience is. A square marks the strength of the record, not a verdict on the experience.
02Visual
- Geometric patterningLattices, spirals, tunnels and other repeating forms seen with eyes closed or overlaid on the visual field.In preparation
9 plantsAcacia (supported)Anadenanthera colubrina (supported)Anadenanthera peregrina (supported)Banisteriopsis caapi (supported)Echinopsis pachanoi (supported)Lophophora williamsii (supported)Mimosa tenuiflora (supported)Psilocybe (supported)Psychotria viridis (supported)
Not establishedBanisteriopsis caapiPsychotria viridis
- Immersive realmsCoherent places or events that surround the experiencer, who seems to be located in them rather than looking at images.Entry
13 plantsAcacia (supported)Anadenanthera colubrina (supported)Anadenanthera peregrina (supported)Banisteriopsis caapi (supported)Diplopterys cabrerana (supported)Echinopsis pachanoi (supported)Lophophora williamsii (supported)Mimosa tenuiflora (supported)Peganum harmala (supported)Psilocybe (supported)Psychotria viridis (supported)Salvia divinorum (supported)Tabernanthe iboga (supported)
- Cosmic and scalar visionThe world, the body or space seen at an altered scale: shrunk, enlarged, or opened to the immense.In preparation
03Other senses
- Intensified hearingHeightened acuity, salience or alteration of sound.In preparation
11 plantsAcacia (supported)Amanita muscaria (supported)Anadenanthera colubrina (anecdotal)Anadenanthera peregrina (supported)Banisteriopsis caapi (supported)Heimia salicifolia (supported)Ipomoea corymbosa (supported)Nicotiana rustica (supported)Peganum harmala (supported)Tabernanthe iboga (supported)Virola theiodora (supported)
- Sound–vision couplingMusic or voice changing the form, movement, colour or emotional tone of imagery.In preparation
04Body
- Nausea and purgingNausea, vomiting or diarrhoea during the acute state.In preparation
14 plantsAcacia (supported)Amanita muscaria (supported)Anadenanthera colubrina (supported)Anadenanthera peregrina (supported)Banisteriopsis caapi (supported)Echinopsis pachanoi (supported)Ipomoea corymbosa (supported)Lophophora williamsii (supported)Mimosa tenuiflora (supported)Nicotiana rustica (supported)Peganum harmala (supported)Psychotria viridis (supported)Tabernanthe iboga (supported)Virola theiodora (supported)
- Tremor and motor slowingTrembling, impaired coordination or slowed movement.In preparation
- Raised blood pressureA measured rise in arterial blood pressure during the acute state.In preparation
8 plantsAnadenanthera colubrina (supported)Banisteriopsis caapi (supported)Echinopsis pachanoi (supported)Ipomoea corymbosa (supported)Lophophora williamsii (supported)Mimosa tenuiflora (supported)Psilocybe (supported)Psychotria viridis (supported)
Not establishedPeganum harmalaSalvia divinorumTabernanthe iboga
- Altered bodily sensationTingling, vibration, heat, cold, heaviness, pressure or internal movement felt in the body.In preparation
- Out-of-body flightLeaving the body, flying, or travelling to distant places.In preparation
05Self and unity
- Ego dissolutionLoosening or loss of the sense of being a bounded self.In preparation
- Unitive experienceThe sense that self and world, or all things, are one or interconnected.In preparation
- Death and rebirthExperiencing one’s own death, and a return or renewal.In preparation
06Affect
- Heightened empathyAn increased sense of others’ feelings or of closeness to them.In preparation
- Fear and dreadFear, panic, chaos or a sense of threat during the experience.In preparation
11 plantsAnadenanthera colubrina (supported)Anadenanthera peregrina (supported)Banisteriopsis caapi (supported)Echinopsis pachanoi (supported)Ipomoea corymbosa (supported)Lophophora williamsii (supported)Mimosa tenuiflora (supported)Papaver somniferum (supported)Psilocybe (supported)Psychotria viridis (supported)Tabernanthe iboga (supported)
- Bliss and euphoriaIntense joy, beauty, love or wellbeing.In preparation
07Cognition
- NoesisThe felt disclosure of knowledge: understanding that seems to arrive with what is perceived.In preparation
11 plantsAnadenanthera colubrina (supported)Anadenanthera peregrina (supported)Banisteriopsis caapi (supported)Diplopterys cabrerana (supported)Echinopsis pachanoi (supported)Ipomoea corymbosa (supported)Lophophora williamsii (supported)Nicotiana rustica (supported)Psilocybe (supported)Psychotria viridis (supported)Salvia divinorum (supported)
- Autobiographical recallVivid re-experiencing or re-viewing of one’s own past, often recast from new positions.In preparation
- Introspective reflectionAttention turned to one’s own life, conduct and relationships.In preparation
- IneffabilityThe experience resists description in words.In preparation
- Loss of ordinary awarenessOrdinary sense, orientation or self-control is lost or overwhelmed.In preparation
10 plantsAmanita muscaria (supported)Banisteriopsis caapi (supported)Claviceps purpurea (supported)Echinopsis pachanoi (supported)Heimia salicifolia (supported)Ipomoea corymbosa (supported)Lophophora williamsii (supported)Mimosa tenuiflora (supported)Psychotria viridis (supported)Salvia divinorum (supported)
- Time distortionTime felt to slow, stretch, stop or lose its ordinary order, or durations misjudged.In preparation
- Delirium without insightConfusion with hallucinations taken for ordinary reality, often followed by patchy or absent memory.In preparation
08Relation to other beings
- Autonomous entitiesBeings experienced as acting, communicating or observing independently of the experiencer’s will.Entry
13 plantsAcacia (supported)Anadenanthera colubrina (supported)Anadenanthera peregrina (supported)Banisteriopsis caapi (supported)Brugmansia suaveolens (supported)Diplopterys cabrerana (supported)Mimosa tenuiflora (supported)Nicotiana rustica (supported)Psilocybe (supported)Psychotria viridis (supported)Salvia divinorum (supported)Tabernanthe iboga (supported)Virola theiodora (supported)
Not establishedBanisteriopsis caapi
- Teaching by the plantThe plant or its spirit is experienced as a teacher, giving knowledge, songs, diet or diagnosis.In preparation
09States of consciousness
- Dreamlike statesOneiric experience: dream formation, dreamlike sequences or a waking state resembling dreaming.In preparation
10Plants and effects
The same record read the other way: every profiled plant against every effect. A square is the plant’s strongest grade for the effect; a dash marks an effect its profile records as not established; an empty cell is an effect its profile does not yet attest, which is not the same as its absence.
Sources
How to read the labels on each source
- Source type
- What kind of work it is: journal article, book, legislation, patent application, database record and so on. A word after the dot (ethnography, protologue, primary source) keeps the genre the entry was first filed under. “Unclassified” means the citation does not say enough to tell.
- Peer review
- Recorded for each work separately, and only where it has been confirmed for that work. It is never inferred from a DOI, a publisher or a journal, since journals also publish editorials, letters and commentaries. Where it has not been confirmed, the entry records it as not established. It does not apply to legislation, court decisions, treaties, patents, datasets, database and collection records, historical texts, films, talks, press releases or web pages.
- Check
- What was checked when the entry was added. DOI checked: the DOI’s registry record (Crossref) matched the citation’s title, first author and year. Verified: the record itself was opened and matched the citation: a library catalogue record for a book, or the page itself for a database entry, law, patent or archive document. “Verified (abstract)” and “(summary)” mean only the abstract or a summary was read. Located: a record was found but not fully matched. Bibliographic record and Stable record (in essays): a catalogue or stable web record exists; what was checked against it is not recorded. Unverified: no check is recorded. No locator found: a search found no record. Secondary: read through another source.
- What the labels do not say
- None of them means the source supports a particular sentence. Where a sentence is graded, its evidence note names its sources and whether each supports it, disputes it or gives context. Dates and reviewers of checks are not recorded for each entry; the version note at the foot of a graded page dates its last review.
- Shanon, B. (2002) The Antipodes of the Mind: Charting the Phenomenology of the Ayahuasca Experience. Oxford: Oxford University Press.
- Studerus, E., Gamma, A. and Vollenweider, F.X. (2010) ‘Psychometric evaluation of the altered states of consciousness rating scale (OAV)’, PLoS ONE, 5(8), e12412.