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The effect of meditation on brain structure: cortical thickness mapping and diffusion tensor imaging.

Do‐hyung Kang, Hang Joon Jo, Wi Hoon Jung, Sun Hyung Kim, Ye-Ha Jung, Chi‐hoon Choi, Ul Soon Lee, Seung Chan An, Joon Hwan Jang, Jun Soo Kwon

Social Cognitive and Affective Neuroscience May 7, 2012 DOI: 10.1093/scan/nss056 (opens in new tab)

Study at a glance

AI-extracted from the abstract
Characteristics Cross-sectional observational study Peer reviewed
Sample size 92
Population 46 experienced meditators and 46 matched meditation-naïve volunteers
Topics Meditation
Keywords Brain Humans Radiography Organ size Matched-pair analysis Awareness Attention Neuronal plasticity Adult Female Diffusion tensor imaging Practice, psychological
Key findings Long-term meditators showed greater cortical thickness in anterior frontal and temporal regions but thinner cortex in posterior parietal and occipital regions compared with matched controls, along with higher fractional anisotropy adjacent to the medial prefrontal cortex. The authors suggest these findings indicate structural differences in both gray and white matter associated with long-term meditation.

Abstract

A convergent line of neuroscientific evidence suggests that meditation alters the functional and structural plasticity of distributed neural processes underlying attention and emotion. The purpose of this study was to examine the brain structural differences between a well-matched sample of long-term meditators and controls. We employed whole-brain cortical thickness analysis based on magnetic resonance imaging, and diffusion tensor imaging to quantify white matter integrity in the brains of 46 experienced meditators compared with 46 matched meditation-naïve volunteers. Meditators, compared with controls, showed significantly greater cortical thickness in the anterior regions of the brain, located in frontal and temporal areas, including the medial prefrontal cortex, superior frontal cortex, temporal pole and the middle and interior temporal cortices. Significantly thinner cortical thickness was found in the posterior regions of the brain, located in the parietal and occipital areas, including the postcentral cortex, inferior parietal cortex, middle occipital cortex and posterior cingulate cortex. Moreover, in the region adjacent to the medial prefrontal cortex, both higher fractional anisotropy values and greater cortical thickness were observed. Our findings suggest that long-term meditators have structural differences in both gray and white matter.

Comparable studies

Other cross-sectional and survey studies on meditation, most cited first.

Study Year Design Participants
Construct Validity of the Five Facet Mindfulness Questionnaire in Meditating and Nonmeditating Samples Experienced meditators and nonmeditating comparison groups 2008 Cross-sectional study
Neural Correlates of Dispositional Mindfulness During Affect Labeling Adult participants 2007 Observational cross-sectional n = 27
Assessing mindfulness in children and adolescents: Development and validation of the Child and Adolescent Mindfulness Measure (CAMM). School-aged children and adolescents 2011 Cross-sectional validation study n = 1,413
Mindfulness and self-compassion as predictors of psychological wellbeing in long-term meditators and matched nonmeditators Experienced meditators and demographically matched nonmeditators 2012 Cross-sectional study n = 152
Mechanisms of Action in the Inverse Relationship Between Mindfulness and Psychological Distress Undergraduates 2008 Cross-sectional, correlational

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