Role of Pavlovian Mechanisms for Control Over Substance Use

Trial statusRecruiting
Trial phaseNot listed
Trial typeObservational
Biological sexAll
Age18-65
SponsorTechnische Universität Dresden

About this trial

During the first funding period (1st FP), the investigators developed a novel full Pavlovian-to-instrumental transfer (PIT) task that allows assessing both, general and specific PIT to investigate whether specific PIT differs between alcohol use disorder (AUD) and control subjects. Preliminary analyses of the full transfer task indicate that AUD participants exhibit a stronger specific PIT effect compared to controls. Based on these findings, the investigators want to compare specific and general PIT effects in patients with moderate to severe substance use disorders (alcohol, cannabis, methamphetamine, amphetamine and cocaine) to healthy controls on the behavioral and neural level (fMRI).

Eligibility criteria

Qualifiers

Men and women between 18-65 years of age,

AUD, and/or SUD subjects only: meet 4 or more criteria for DSM-5 alcohol-related and/or substance-related (cannabis, amphetamine, methamphetamine or cocaine disorder (not requiring withdrawal as assessed by an independent psychiatrist),

Currently using alcohol without a desire for abstinence

Ability to consent to the study and complete the questionnaires.

Disqualifiers

Lifetime diagnosis of DSM-5 bipolar disorder or schizophrenia or schizophrenia spectrum disorder (if induced by drugs, it should happen more than a month ago)

Current threshold DSM-5 diagnosis of major depressive disorder, or presence of suicidal intention

High risk (≤ 26) ASSIST scores in other substances other than alcohol, amphetamine, methamphetamine, cannabis, cocaine, tobacco

History of traumatic brain injury or severe neurological disease (such as Dementia, Parkinson's disease, multiple sclerosis, Epilepsy, Meningitis, Stroke)

Trial design

Treatments tested in this trial

  • fMRI imaging (BOLD)
  • sMRI (structure)
  • Pavlovian-to-instrumental transfer (PIT) paradigm
  • Basic psychological assessment (interview)
  • Basic psychological assessment (questionnaires)
  • Neuropsychological tests

Treatment groups

200 Participants
are divided into 4 treatment groups

Sponsors and collaborators

Technische Universität Dresden

Lead sponsor

Charite University, Berlin, Germany

Collaborator

Central Institute of Mental Health, Mannheim

Collaborator