Reduced mind wandering in experienced meditators and associated EEG correlates

Area of Science:

• Contemplative Science
• Neuroscience
• Cognitive Psychology

Background:

• The impact of meditation experience on internal state monitoring and neural correlates remains an open question.
• Understanding how meditation influences the awareness, duration, and frequency of mind wandering is crucial.

Purpose of the Study:

• To assess the relationship between meditation expertise and mind wandering.
• To investigate the neural activity associated with meditation absorption versus mind wandering episodes.

Main Methods:

• Compared electroencephalography (EEG) data and self-reported mental states during meditation in expert and non-expert meditators.
• Utilized an experiential sampling probe paradigm during ~1 hour of seated concentration meditation.
• Analyzed dynamic EEG measures, specifically frontal midline theta and somatosensory alpha rhythms.

Main Results:

• Expert practitioners reported deeper, more frequent sustained meditation, while non-experts reported more frequent mind wandering.
• Expert meditators exhibited reduced mind wandering frequency, a direct behavioral index of meditation expertise.
• EEG analysis revealed increased frontal midline theta and somatosensory alpha rhythms during meditation compared to mind wandering in experts.

Conclusions:

• Meditation training, particularly advanced practice, effectively reduces mind wandering.
• Specific neural mechanisms, including frontal midline theta and somatosensory alpha rhythms, are modulated by meditation.
• Findings support the hypothesis that attention control mechanisms are shared across internal and external orientations and can be trained via meditation.