MedTrace Logo

Brain Connectivity Between Networks Implied in Inhibition and Cue-reactivity in Alcohol Use Disorder

NCT05843435 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 59

Last updated 2025-11-25

No results posted yet for this study

Summary

Research about patients with alcohol use disorder has shown that task-related brain activation patterns as well as resting-state connectivity (measured with functional magnetic resonance imaging) change with clinical parameters such as the extent of craving and duration of abstinence during treatment. These brain activation alterations are related to treatment success. Although an imbalance between increased cue-reactivity and impaired counteracting inhibitory control processes are at the core of most neuropsychological conceptualizations of alcohol use disorder, the direct interaction between these two processes has not yet been investigated. Therefore, the investigators aim to study patients with alcohol use disorder in an ultra-high-field 7 Tesla magnetic resonance imaging scanner to identify fine-grained activation and connectivity patterns. The investigators would like to improve the knowledge of the interplay between the brain networks for inhibition and cue-reactivity, as well as to explore its influence on craving and treatment success. The investigators hypothesize that a more pronounced negative relationship between increased cue-reactivity and reduced inhibitory control processes in the brain is linked to higher craving and worse relapse probability.

Conditions

Interventions

BEHAVIORAL

Go-Nogo-task during functional magnetic resonance imaging

Go-Nogo-task (GNG) implemented as a mixed block- and event-related design paradigm for task-related functional resonance imaging. It is composed of six blocks, each containing an event-related inhibitory control GNG. There are two blocks with an alcohol-related GNG, two blocks with a neutral GNG, and two blocks with a mixed GNG paradigm. The blocks are presented in a counterbalanced fashion between the participants. Each block contains 125 Go-trials and 25 NoGo-trials (ratio 5:1), resulting in 150 trials per block with a block time of 5 minutes. Participants are instructed to press a button whenever a stimulus appears on the screen (Go-trial). The only exception to this rule is when the same stimulus appears twice (NoGo-trial). Stimulus material consists of 60 alcohol-related and 60 neutral pictures, presented in a pseudo-randomized order.

OTHER

Resting-state functional magnetic resonance imaging

An fMRI (multiband-echo-planar imaging) blood oxygenated level dependent (BOLD) protocol is run during 6 minutes of rest. This protocol allows the assessment of connectivity measures at rest, which can be compared to connectivity changes during the GNG task.

Sponsors & Collaborators

  • Clinic Suedhang

    collaborator UNKNOWN

  • University of Bern

    lead OTHER

Principal Investigators

  • Matthias Grieder, PhD · University Hospital for Psychiatry and Psychotherapy Bern

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2024-05-01
Primary Completion
2025-10-13
Completion
2025-10-31

Countries

  • Switzerland

Study Locations

More Related Trials

Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT05843435 on ClinicalTrials.gov