Neuroimaging Data From a Single Participant Before and After a Meditation Retreat: a Proof of Concept Study. Sato, J., R., Kozasa, E., H., Wallace, B., A., & Amaro, E. Journal of Cognitive Enhancement, 1(2):235-241, 2017. Website abstract bibtex There are many studies on the effects of meditation interventions and some about meditation retreats in a group of participants, but how to study the brain of a single subject who decides to seclude himself/herself in a retreat? The aim of this study was to present a proof of concept for the feasibility of a single-subject analysis, which allows the study of meditation effects on the brain. We tested the proposed approach in a med-itator entering a 5.5-week retreat. Neuroimaging data were ac-quired using diffusion tensor imaging, structural magnetic reso-nance imaging, and functional magnetic resonance imaging un-der resting-state condition. Comparing pre vs. post data, we no-ticed reductions in the visual cortices (primary and secondary), Brodmann area 8, and anterior cingulate cortex, while the ampli-tude of low-frequency fluctuations increased in the dorsolateral prefrontal cortex. A greater regional homogeneity was observed in the precuneus before the retreat. Reductions in the anterior cingulate cortex may be due to the retreat environment and rou-tine and its focus on the management of mental affliction, allowing participants to develop a focused and calm mind (less-ened conflicts). Other changes may be related to both less mind wandering and more recruitment of the attentional circuitry dur-ing the meditation practices.
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title = {Neuroimaging Data From a Single Participant Before and After a Meditation Retreat: a Proof of Concept Study},
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abstract = {There are many studies on the effects of meditation interventions and some about meditation retreats in a group of participants, but how to study the brain of a single subject who decides to seclude himself/herself in a retreat? The aim of this study was to present a proof of concept for the feasibility of a single-subject analysis, which allows the study of meditation effects on the brain. We tested the proposed approach in a med-itator entering a 5.5-week retreat. Neuroimaging data were ac-quired using diffusion tensor imaging, structural magnetic reso-nance imaging, and functional magnetic resonance imaging un-der resting-state condition. Comparing pre vs. post data, we no-ticed reductions in the visual cortices (primary and secondary), Brodmann area 8, and anterior cingulate cortex, while the ampli-tude of low-frequency fluctuations increased in the dorsolateral prefrontal cortex. A greater regional homogeneity was observed in the precuneus before the retreat. Reductions in the anterior cingulate cortex may be due to the retreat environment and rou-tine and its focus on the management of mental affliction, allowing participants to develop a focused and calm mind (less-ened conflicts). Other changes may be related to both less mind wandering and more recruitment of the attentional circuitry dur-ing the meditation practices.},
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author = {Sato, João R. and Kozasa, Elisa H. and Wallace, B. Alan and Amaro, Edson},
journal = {Journal of Cognitive Enhancement},
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