Mindfulness meditation alters alpha amplitude without affecting arousal.
Alexander T. Duda, Adam R. Clarke, Robert J. Barry, Frances M. De Blasio
International Journal of Psychophysiology June 14, 2025 DOI: 10.1016/j.ijpsycho.2025.113197 (opens in new tab)
Study at a glance
AI-extracted from the abstract| Characteristics | Randomized controlled trial Peer reviewed |
|---|---|
| Sample size | 42 |
| Population | Young adults (mean age 21.05 years; 26 females) |
| Intervention | Mindfulness meditation |
| Duration | Six-week intervention |
| Topics | Meditation |
| Keywords | Alpha EEG Scl Attentional control Relaxed alertness Mindfulness meditation Daily mindfulness practice Attentional engagement Neurophysiological measures Brain activity Physiological arousal Brain responses Skin responses |
| Citations | 3 |
| Key findings | Mindfulness meditation reduces alpha band activity compared to rest, likely reflecting enhanced attentional engagement rather than an arousal change. |
Abstract
Mindfulness meditation has experienced a surge in popularity due to its well-documented health benefits, although the mechanisms driving these benefits are not clearly understood. This study explored whether mindfulness of breathing meditation induces changes in brain function and physiological responses related to attention or arousal mechanisms. Electroencephalography (EEG) and skin conductance level (SCL) data were recorded during eyes-closed resting and meditation states in 42 young adults (Mage = 21.05 years; 26 females) across two sessions (pre-training, post-training) six weeks apart. Between sessions, participants were randomly assigned to one of two groups completing a daily 15-min activity involving either mindfulness (n = 21) or music (n = 21; active-control group). Results revealed a significant reduction in alpha amplitude (8-13 Hz) during meditation compared to rest. Additionally, post-training, there was a smaller alpha reduction during meditation in the mindfulness group, particularly in the frontal/posterior region, evidence of a possible trait effect. While SCL remained stable over meditation and rest, a decrease was evident in both groups post-training, indicating reduced arousal. However, no significant associations were found between SCL and global alpha amplitude. Together, these findings suggest mindfulness meditation reduces alpha band activity, likely reflecting enhanced attentional engagement rather than an arousal change, supporting the view of mindfulness meditation as a state of relaxed alertness. The present findings provide new insights into the mechanisms underlying mindfulness meditation, emphasising the importance of alpha band activity in attentional control, which may contribute to its health benefits, including improved emotional regulation and cognitive functioning.
Comparable studies
Other randomized controlled trials on meditation, most cited first.
| Study | Year | Design | Participants |
|---|---|---|---|
| Alterations in Brain and Immune Function Produced by Mindfulness Meditation Healthy employees in a work environment | 2003 | Randomized controlled trial | n = 41 |
| Prevention of relapse/recurrence in major depression by mindfulness-based cognitive therapy. Recovered recurrently depressed patients | 2000 | Randomized controlled trial | n = 145 |
| Open hearts build lives: Positive emotions, induced through loving-kindness meditation, build consequential personal resources. Working adults | 2008 | Randomized controlled trial | n = 139 |
| Short-term meditation training improves attention and self-regulation Undergraduate Chinese students | 2007 | Randomized controlled trial | n = 40 |
| Mindfulness-Based Cognitive Therapy for Depression: Replication and Exploration of Differential Relapse Prevention Effects. Recovered recurrently depressed patients | 2004 | Randomized controlled trial | n = 73 |
Citations in the library
Cited by 4
- Differential Effects of Mindfulness Meditation and Paced Breathing on Neural Oscillations and Arousal Mindfulness August 15, 2025
- Neural Oscillatory and Sympathetic Arousal Dynamics During Mindfulness Meditation: Characterizing Relaxed Alertness Psychophysiology October 1, 2026
- Mindfulness Development via Biofeedback for Anxiety in Hospitalized Patients: A Randomized Controlled Trial Brain Sciences July 15, 2026
- Haptic Meditation Enhancement Device (HMED): An Arduino-Based Multi-Sensor Real-Time Monitoring and Intervention Support System. Italian National Conference on Sensors July 1, 2026
Cites 37
- Using Self-Report Assessment Methods to Explore Facets of Mindfulness Assessment January 27, 2006
- Mindfulness: A proposed operational definition. Clinical Psychology Science and Practice 2004
- How Does Mindfulness Meditation Work? Proposing Mechanisms of Action From a Conceptual and Neural Perspective Perspectives on Psychological Science October 14, 2011
- Alterations in Brain and Immune Function Produced by Mindfulness Meditation Psychosomatic Medicine July 1, 2003
- Mindfulness Interventions Annual Review of Psychology September 30, 2016
and 32 more in the library