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Effects of mindfulness-based stress reduction meditation on the emotional reaction to affective pictures assessed by electrodermal activity

Pedro Correia, Cláudia Quaresma, Pedro Henrique de Paula Ramalho Morais, Miguel Fonseca, Ricardo Vigário, Carla Quintão

Biomedical Signal Processing and Control August 12, 2023 DOI: 10.1016/j.bspc.2023.105314 (opens in new tab)

Study at a glance

AI-extracted from the abstract
Characteristics Observational longitudinal study Peer reviewed
Sample size 25
Population Healthy volunteers with no previous experience of meditation techniques
Intervention Mindfulness-Based Stress Reduction (MBSR)
Duration 12-week MBSR course, with data collected longitudinally in 4 scheduled sessions
Measures Electrodermal Activity (EDA), depression, anxiety, and stress scale (DASS) questionnaire
Topics Meditation
Citations 10
Key findings Across a 12-week Mindfulness-Based Stress Reduction course, participants showed increased electrodermal response latency and decreased amplitude, area, number of specific responses, and skin conductance level, which the authors suggest indicates reduced reactivity to emotional stimuli and improved emotional well-being. Preliminary evidence suggested women improved their attitude toward stressful stimuli more than men, and electrodermal parameters correlated with depression, anxiety, and stress scale (DASS) scores.

Abstract

In recent years the psychophysiological benefits of Mindfulness meditation on emotional processing have drawn great interest in scientific research. Currently, the effects of this meditation practice on stress, anxiety and well-being have been mostly evaluated using self-reporting questionnaires, which lead to a quite subjective assessment. This study assesses the effect of Mindfulness practice on the reaction to emotionally charged visual stimuli through Electrodermal Activity (EDA) data. Twenty-five healthy volunteers, without any previous experience of meditation techniques completed a 12-week Mindfulness-Based Stress Reduction (MBSR) course. EDA and psychological measures were collected longitudinally in 4 scheduled sessions. Statistical analysis was performed to find changes in the most relevant EDA parameters throughout the 4 sessions of data collection. We found an increase in response latency, and a decrease in amplitude, area, number of specific responses, and skin conductance level along Mindfulness training. Both outcomes might suggest a reduction in the reactivity to the presented stimuli and an improvement in the emotional well-being of the practitioners. Furthermore, this study showed preliminary evidence that women improve more their attitude towards stressful stimuli than man, after the mindfulness practice. The statistical analysis also showed a correlation between the main EDA parameters and the scores reported by each participant in the depression, anxiety, and stress scale (DASS) questionnaire. This study contributed to a more objective evaluation of the physiological changes observed during Mindfulness practice, and so to understand the underlying mechanisms that explain the benefits of meditation training.

Comparable studies

Other observational and cohort studies on meditation, most cited first.

Study Year Design Participants
Using Self-Report Assessment Methods to Explore Facets of Mindfulness Undergraduate students 2006 Observational cohort
Effectiveness of a meditation-based stress reduction program in the treatment of anxiety disorders Patients with generalized anxiety disorder or panic disorder with or without agoraphobia 1992 Observational cohort n = 22
Meditation experience is associated with increased cortical thickness Participants with extensive Insight meditation experience and matched controls 2005 Observational cohort n = 20
Meditation experience is associated with differences in default mode network activity and connectivity Experienced meditators and matched meditation-naive controls 2011 Observational cohort
Long-term meditators self-induce high-amplitude gamma synchrony during mental practice Long-term Buddhist practitioners and controls 2004 Observational cohort

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