Skip to main content

Effect Index

Effect Index, 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.

About Us

Thank you Emergence Benefactors!

Emergence Benefactors logo
Thank you to our wonderful sponsor, Emergence Benefactors

Mailing List

Sign up for the Effect Index list

Substance Summaries

Hallucinogenic substance classes, broken down and described

For more, see the articles section.

Featured Effects

A selection of subjective effects that best represent the SEI

For more, see the Subjective Effect Index.

Featured Article

Analyses that go beyond individual subjective effects

Lucid dreaming

Saturday, March 20 2021 · 12 min read

This article focuses on serving as an informational guide for learning to consistently gain a stable sense of lucidity within one's own dreams, as well as the instructional techniques for utilizing and harnessing further control of the dream once this has been achieved.

For more, see the articles section.

Featured Replications

Artistic representations of specific subjective effects

DMT in less than 15 seconds

A replication of Geometry

by Symmetric Vision

For more, see the replications gallery.

Featured Reports

Recommended firsthand accounts of hallucinogenic experiences

DiPT

70 mg oral

Extreme Psychosis

by Cocoanatta

Combination

2C-E

25mg Oral

Combination

Ayahuasca

2.5g Syrian Rue / 6g Mimosa hostilis rootbark Oral

4-HO-MET

100mg Oral

Ayahuasca

2.5g Syrian Rue / 6g Mimosa hostillis Oral

Nightmares in Eiriel

by Sedric Lightbury

DPH

2000mg Oral

For more, see the reports section.