Effect Index, which is currently under construction, is a resource dedicated to establishing the field of formalised subjective effect documentation. It is the home of the Subjective Effect Index (SEI), which contains 233 effect descriptions that exist to serve as a comprehensive map of all potential experiences that can occur under the influence of any class of psychoactive compound, particularly hallucinogens.
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About Us
Substance Summaries
Hallucinogenic substance classes, broken down and described
- Psychedelics: Visual, Cognitive, Miscellaneous
- Dissociatives
- Deliriants
For more, see the
articles section.
Featured Effects
A selection of subjective effects that best represent the SEI
Visual Effects
Autonomous entity ⋅ Colour shifting ⋅ Drifting ⋅ Environmental patterning ⋅ External hallucination ⋅ Geometry ⋅ Internal hallucination ⋅ Symmetrical texture repetition ⋅ Tracers ⋅ Visual disconnection
For more, see the
Subjective Effect Index.
Featured Article
Analyses that go beyond individual subjective effects
by Josie Kins
Wednesday, April 21 2021
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12 min read
Inspired by the Shulgin Rating Scale, this article attempts to model the overall psychedelic experience as a systematic progression of seven levels.
For more, see the
articles section.
Featured Reports
Recommended firsthand accounts of hallucinogenic experiences
by Josie
Ayahuasca
2.5g Syrian Rue / 6g Mimosa hostillis Oral
by Josie
4-HO-MET
60mg Oral
by nervewing
DiPT
70 mg oral
by Cocoanatta
Combination
by Oscarette
Combination
by nervewing
MXE
50mg Intranasal
by Kaylee
Combination
by Greg
LSD
4 tabs Oral
For more, see the
reports section.