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The effects of Mindfulness-Based Cognitive Therapy on affective memory recall dynamics in depression: a mechanistic model of rumination

Marieke Karlijn van Vugt, Peter eHitchcock, Ben eShahar, Willoughby eBritton

Frontiers in Human Neuroscience May 22, 2014 DOI: 10.3389/fnhum.2012.00257 (opens in new tab)

Study at a glance

AI-extracted from the abstract
Characteristics Randomized controlled trial Peer reviewed
Sample size 52
Population Individuals with recurrent depression
Intervention Mindfulness-based cognitive therapy
Topics Meditation Depression
Keywords Memory Emotional processing Free recall
Key findings MBCT prevented deterioration toward more negative and less positive bias in initial recall and reduced the tendency to sustain trains of negative words, compared to wait-list controls.

Abstract

Objectives: Converging research suggests that mindfulness training exerts its therapeutic effectson depression by reducing rumination. Theoretically, rumination is a multifaceted construct thataggregates multiple neurocognitive aspects of depression, including poor executive control,negative and overgeneral memory bias, and persistence or stickiness of negative mind states.Current measures of rumination, most often self-reports, do not capture these different aspects ofruminative tendencies, and therefore are limited in providing detailed information about themechanisms of mindfulness.Methods: We developed new insights into the potential mechanisms of rumination, based onthree model-based metrics of free recall dynamics. These three measures reflect the patterns ofmemory retrieval of valenced information: The probability of first recall (Pstart) whichrepresents initial affective bias, the probability of staying with the same valence category ratherthan switching, which indicates strength of positive or negative association networks (Pstay);and probability of stopping (Pstop) or ending recall within a given valence, which indicatesdrift persistence or stickiness of a mind state. We then investigated the effects of MBCT(N=29) vs wait-list control (N=23) on these recall dynamics in a Randomized Controlled Trial(RCT) in individuals with recurrent depression. Participants completed a standard laboratorystressor, the Trier Social Stress Test (TSST), to induce negative mood and activate ruminativetendencies. Then, participants completed a free recall task consisting of three word lists. Thisassessment was conducted both before and after treatment or wait-list.Results: While MBCT participant’s Pstart remained relatively stable, controls showed multipleindications of depression-related deterioration towards more negative and less positive bias.Following the intervention, MBCT participants decreased in their tendency to sustain trains ofnegative words

Comparable studies

Other randomized controlled trials on depression, most cited first.

Study Year Design Participants
A Randomized Trial of an N-methyl-D-aspartate Antagonist in Treatment-Resistant Major Depression Subjects with DSM-IV major depression (treatment resistant) 2006 Randomized, placebo-controlled, double-blind crossover study n = 18
Prevention of relapse/recurrence in major depression by mindfulness-based cognitive therapy. Recovered recurrently depressed patients 2000 Randomized controlled trial n = 145
Psilocybin produces substantial and sustained decreases in depression and anxiety in patients with life-threatening cancer: A randomized double-blind trial Cancer patients with life-threatening diagnoses and symptoms of depression and/or anxiety 2016 Randomized controlled trial n = 51
Rapid and sustained symptom reduction following psilocybin treatment for anxiety and depression in patients with life-threatening cancer: a randomized controlled trial Patients with cancer-related anxiety and depression 2016 Double-blind, placebo-controlled, crossover trial n = 29
Mindfulness-Based Cognitive Therapy for Depression: Replication and Exploration of Differential Relapse Prevention Effects. Recovered recurrently depressed patients 2004 Randomized controlled trial n = 73

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