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Meditation and the brain - Neuronal correlates of mindfulness as assessed with near-infrared spectroscopy.

Friederike Gundel, Johanna Von Spee, Sabrina Schneider, Florian B Haeussinger, Martin Hautzinger, Michael Erb, Andreas J Fallgatter, Ann-Christine Ehlis

Psychiatry Research Neuroimaging January 30, 2018 DOI: 10.1016/j.pscychresns.2017.04.002 (opens in new tab)

Study at a glance

AI-extracted from the abstract
Characteristics Observational study Peer reviewed
Sample size 30
Population Meditation experts (14 participants) and a control group (16 participants)
Topics Default mode network Meditation
Keywords Auditory cortex Kims-d Near-infrared spectroscopy nirs
Key findings Meditation experts showed different lateralization patterns than controls, with greater left-hemisphere activity at rest and greater right-hemisphere activity during mindfulness. Experts had more widespread auditory cortex activation at rest, and during mindfulness controls decreased activation in higher auditory areas (BA 1, 6, 40) while experts increased it. Experts also showed heightened activity in BA 39, 40, 44, and 45 beyond the task, which the authors suggest may indicate long-term brain changes with positive effects on empathy, metacognitive skills, and health.

Abstract

Mindfulness meditation as a therapeutic intervention has been shown to have positive effects on psychological problems such as depression, pain or anxiety disorders. In this study, we used functional near-infrared spectroscopy (fNIRS) to detect differences in hemodynamic responses of meditation experts (14 participants) and a control group (16 participants) in a resting and a mindfulness condition. In both conditions, the sound of a meditation bowl was used to find group differences in the auditory system and adjacent cortical areas. Different lateralization patterns of the brain were found in expert meditators while being in a resting state (amplified left hemisphere) or being in mindfulness state (amplified right hemisphere). Compared to the control group, meditation experts had a more widespread pattern of activation in the auditory cortex, while resting. In the mindfulness condition, the control group showed a decrease of activation in higher auditory areas (BA 1, 6 and 40), whereas the meditation experts had a significant increase in those areas. In addition, meditation expert had highly activated brain areas (BA 39, 40, 44 and 45) beyond the meditative task itself, indicating possible long-term changes in the brain and their positive effects on empathy, meta cognitive skills and health.

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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