The Use of Behavioral Reconsolidation Interference in Depressive Disorders. A Double-Blinded Randomized Controlled...

Area of Science:

• Neuroscience
• Psychiatry
• Cognitive Psychology

Background:

• Depressive disorders frequently recur, with existing treatments often insufficient for prevention.
• Recurrence in affective disorders is linked to persistent disorder-related memory traces, even after interventions.
• Reconsolidation-interference protocols aim to modify these memory traces, but their efficacy in depression is unstudied.

Purpose of the Study:

• To investigate the efficacy of reconsolidation-interference protocols for reducing depression-like helplessness.
• To provide the first experimental evidence on applying reconsolidation-interference to depression-like states.

Main Methods:

• A three-day, double-blind, randomized controlled trial with 60 participants.
• Induction of helplessness via an unsolvable anagram task.
• Three intervention groups on day two: extinction, reconsolidation, or reactivation, alongside a cognitive task.
• Assessment of recurrence susceptibility on day three via the helplessness task, with behavioral, self-report, and EEG data collection.

Main Results:

• Successful induction of helplessness, evidenced by reduced motivation and performance.
• No significant group differences were observed across behavioral, self-report, or EEG measures following interventions.
• Exploratory analyses indicated potential mediation by brain-derived neurotrophic factor (BDNF) levels.

Conclusions:

• Reconsolidation-based behavioral interference was not effective in treating depression-like helplessness in this study.
• BDNF emerged as a potential mediator, suggesting a need for further research into its role in postretrieval extinction effects in depression.