Memory Retrieval-Extinction Combined With Virtual Reality Reducing Drug Craving for Methamphetamine: Study Protocol...

Area of Science:

• Neuroscience
• Psychology
• Addiction Medicine

Background:

• Relapse in methamphetamine use disorder (MUD) is often driven by drug-associated cues triggering craving and reactivating memories.
• Traditional extinction training can be temporary, leading to spontaneous recovery or renewal of cue-elicited responses.
• The retrieval-extinction (R-E) paradigm, based on memory reconsolidation theory, aims to update drug-associated memories more permanently.

Purpose of the Study:

• To evaluate the effectiveness of retrieval-extinction (R-E) training combined with virtual reality (VR) in reducing cue-elicited responses in individuals with MUD.
• To compare VR R-E training with standard extinction, R-E training outside the optimal time window, and video-based R-E training.
• To assess the impact on spontaneous recovery and renewal of cue-elicited responses in methamphetamine abusers.

Main Methods:

• A parallel matched controlled study involving 95 participants diagnosed with MUD.
• Random assignment to four groups: VR R-E (10 min), VR with neutral cues followed by extinction (NR-10 min-E), VR R-E (6 h), and video R-E (10 min).
• Assessment of cue-evoked craving and reactivity at baseline and at 1 day, 1 week, 1 month, and 6 months post-intervention.

Main Results:

• This section is to be filled once the study results are available.
• The study is designed to provide data on the efficacy of different R-E training protocols.
• Long-term follow-up will determine the durability of the intervention's effects on craving and reactivity.

Conclusions:

• This study is likely the first to investigate the efficacy of VR-enhanced R-E training for MUD.
• This non-pharmacological intervention targets drug-associated memories, potentially offering a novel approach to reduce relapse.
• Confirmation of efficacy could lead to significant clinical implications for MUD treatment.