Status:

COMPLETED

LSD-Perceptual-Choice-Study

Lead Sponsor:

University Hospital, Basel, Switzerland

Collaborating Sponsors:

University of Basel

University Psychiatric Clinics Basel

Conditions:

LSD Reaction

Eligibility:

All Genders

18-65 years

Phase:

NA

Brief Summary

The aim of the study is to characterize the effects of low doses of LSD (d-lysergic acid diethylamide) on behavioral and neural indicators of feedback and feedforward signaling in perceptual decision-...

Detailed Description

The study team will subject healthy participants to multiple perceptual decision-making tasks after the administration of low doses of LSD (d-lysergic acid diethylamide) as a pharmacological challenge...

Eligibility Criteria

Inclusion

  • Willingness to adhere to the study protocol and sign the consent form
  • ≥ 18 and ≤ 65 years of age at Screening
  • Body mass index 18-29
  • Fluent understanding of German
  • Normal or corrected-to-normal vision
  • Willingness to not operate a traffic vehicle or heavy machinery 24 hours after substance administration
  • Willingness to refrain from taking illicit psychoactive substances, including cannabis, for the duration of the study
  • Willingness to not consume more than one alcoholic standard drink the night before the study sessions and not consume alcohol for 24 h after each study session
  • Willingness to abstain from xanthine-based liquids from the evenings prior to the study sessions and during the sessions
  • Willingness to use effective birth-control throughout the study duration
  • Adequate task performance in the decision-making tasks during a practice session in the screening visit

Exclusion

  • Recent (\<30 days) or current participation in another clinical trial
  • Women that are pregnant, nursing, or planning to become pregnant during the study period
  • Current use of contraindicated/psychoactive medications or illicit drugs
  • Lifetime use of classical psychedelics more than 20 times, or any time within the previous two months
  • Consumption of \>5 cigarettes per day or \>20 alcoholic standard drinks per week
  • Severe chronic or acute medical condition
  • Hypertension (\>140/90 mmHg) or hypotension (\<85mmHg systolic)
  • Current or lifetime major mental health disorder
  • Personal or family (first-degree) history of a primary psychotic disorder

Key Trial Info

Start Date :

February 26 2024

Trial Type :

INTERVENTIONAL

Allocation :

ACTUAL

End Date :

February 25 2025

Estimated Enrollment :

30 Patients enrolled

Trial Details

Trial ID

NCT05976698

Start Date

February 26 2024

End Date

February 25 2025

Last Update

March 14 2025

Active Locations (1)

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University Psychiatric Clinics Basel

Basel, Switzerland, 4002