Evidence map›Paper›PMID 35348806›Full record

ArticlePsychopharmacology2022

How to account for hallucinations in the interpretation of the antidepressant effects of psychedelics: a translational framework.

Manon van den Berg, Igor Magaraggia, Rudy Schreiber, Todd M Hillhouse, Joseph H Porter

Open access · hybridAbstract read
In one paragraph

Article in Psychopharmacology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed, 1 pooled it
2.7field-weighted citation impact, top 11% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

6 citing papers in PubMed, 1 synthesis or guideline pooled it, 14 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Review
  4. Review
  5. Article
  6. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 3 institutions in 2 countries.

Manon van den Berg *Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands.
Igor Magaraggia *Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands.
Rudy SchreiberFaculty of Psychology and Neuroscience, Section Neuropsychology & Psychopharmacology, Maastricht University, Maastricht, The Netherlands. rudy.schreiber@maastrichtuniversity.nl.
Todd M HillhouseDepartment of Psychology, University of Wisconsin Green Bay, Green Bay, WI, USA.
Joseph H PorterDepartment of Psychology, Virginia Commonwealth University, Richmond, USA.
Maastricht University · NLUniversity of Wisconsin–Green Bay · USVirginia Commonwealth University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

rationaleRecent trials with psychedelics in major depressive disorder and treatment-resistant depression showed remarkable improvements in depressive symptoms that can last for up to several months after even a single administration. The lack of an appropriate placebo control group-as patients are often able to discriminate the subjective effects of the drug-and an incomplete understanding of the role of the hallucinogenic and mystical experience, hampers the interpretation of these therapeutic effects.

objectivesTo control for these factors, we developed a translational framework based on establishing pharmacokinetic/pharmacodynamic (PK/PD) relationships in rodents and humans for hallucinogenic (i.e., discriminative stimulus effects in rodents and humans; head twitch responses in rodents; questionnaires in humans) and therapeutic effects. For the latter, we selected the pattern separation and attentional set-shifting tasks as measures for cognitive flexibility because of their high translational value. We predict that these PK/PD analyses will lead to a more objective evaluation of improvements in patients compared to relying only on the currently used self-reported questionnaires. We hypothesize that-if the role of the hallucinogenic experience is not central in the antidepressant effects of psychedelics-the ED

conclusionOur framework will help to inform future studies that aim at the elucidation of the mechanism(s) of action of psychedelics in depression, and the role of the acute subjective and/or hallucinogenic experience in their effects.

Indexed as

HallucinogensMajor Depressive DisorderAntidepressive AgentsHallucinationsHumansLysergic Acid DiethylamidePsilocybinSurveys and QuestionnairesAntidepressive AgentsHallucinogensLysergic Acid DiethylamidePsilocybinCognitive flexibilityDepressionDrug discriminationHead twitch response (HTR)Lysergic acid diethylamide (LSD)N,N-dimethyltryptamine (DMT)Pattern separation (PS)PsilocybinPsychedelics

Identifiers

PMID35348806
PMCPMC9166823
OpenAlexW4220677776

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.