Yoga and Neuroscience

Yoga and Neuroscience refers to the intersection of yoga research with neuroscience, examining neural mechanisms of yoga practices.

Summary

Neuroimaging and neurophysiological studies investigate how yoga postures, breathing, and meditation affect brain structure, functional connectivity, and neurotransmitter systems.

Key Findings

Yoga practice is associated with increased gray matter in the hippocampus, prefrontal cortex, and insula. Functional MRI shows altered default mode network connectivity in long-term practitioners. Yoga increases GABA levels, potentially explaining anxiolytic effects. Pranayama modulates autonomic nervous system function via vagal pathways. Structural brain changes are observed even in short-term (8–12 week) interventions.

Methodology

Studies use fMRI, PET, EEG, MRS (magnetic resonance spectroscopy), and peripheral biomarkers. Designs include cross-sectional comparisons and pre-post intervention imaging.

Limitations

Neuroimaging studies have small samples. Causality cannot be established from cross-sectional designs. Long-term neural changes require longitudinal studies.

Verification Notes

• Gothe & McAuley (2015) and subsequent reviews summarize neuroscience of yoga.
• Literature reviewed through 2020s.