Improve the Brain for Better Emotions with Mindfulness
By John M. de Castro, Ph.D.
“meditation affects the brain. . . four regions of meditators’ brains associated with healthy brain function become more substantial, while one of the areas associated with undesirable behavior actually shrinks.” – Mindworks
Mindfulness training has been shown to improve health and well-being. It has also been found to be effective for a large array of medical and psychiatric conditions, either stand-alone or in combination with more traditional therapies. There are a number of ways that mindfulness practices produce these benefits, including changes to the brain and physiology.
The nervous system is a dynamic entity, constantly changing and adapting to the environment. It will change size, activity, and connectivity in response to experience. These changes in the brain are called neuroplasticity. Over the last decade neuroscience has been studying the effects of contemplative practices on the brain and has identified neuroplastic changes in widespread areas. In other words, mindfulness practice appears to mold and change the brain, producing psychological, physical, and spiritual benefits. It is not clear, however, what effects brief mindfulness training might have on temperament and the brain.
In today’s Research News article “Brief Mindfulness Meditation Induces Gray Matter Changes in a Brain Hub.” (See summary below or view the full text of the study at: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7704181/ ) Tang and colleagues recruited healthy meditation-naïve college students and randomly assigned them to receive 30 minutes for 20 consecutive days of either Integrative Body-Mind Training or relaxation training. Before and after training they were measured for temperament, including effortful control, negative affect, extraversion/surgency, and orienting sensitivity, and underwent brain scanning with Magnetic Resonance Imaging (MRI).
They found that in comparison to the relaxation group and the baseline after training the mindfulness group had a significant increase in the volume of the ventral posterior cingulate cortex in the brain. They also found that the greater the increase in the volume of the ventral posterior cingulate cortex the greater the decrease in negative emotions in the participant. So, 20 days of mindfulness training increased ventral posterior cingulate cortex volume which was, in turn, associated with lower levels of negative emotions.
The ventral posterior cingulate cortex is a component of the default mode network in the brain that is associated with emotion processing, self-referential thinking, and mind wandering. Mindfulness training has been shown previously to produce improvements in emotions including more positive and less negative emotions. This suggests that 20 days of mindfulness training reduces negative emotions by producing neuroplastic changes in the default mode network of the brain.
So, change the brain for better emotions with mindfulness.
“the brains of subjects thickened after an eight-week meditation course.” – Harvard Gazette
CMCS – Center for Mindfulness and Contemplative Studies
This and other Contemplative Studies posts are also available on Google+ https://plus.google.com/106784388191201299496/posts and on Twitter @MindfulResearch
Study Summary
Tang, R., Friston, K. J., & Tang, Y. Y. (2020). Brief Mindfulness Meditation Induces Gray Matter Changes in a Brain Hub. Neural plasticity, 2020, 8830005. https://doi.org/10.1155/2020/8830005
Abstract
Previous studies suggest that the practice of long-term (months to years) mindfulness meditation induces structural plasticity in gray matter. However, it remains unknown whether short-term (<30 days) mindfulness meditation in novices could induce similar structural changes. Our previous randomized controlled trials (RCTs) identified white matter changes surrounding the anterior cingulate cortex (ACC) and the posterior cingulate cortex (PCC) within 2 to 4 weeks, following 5-10 h of mindfulness training. Furthermore, these changes were correlated with emotional states in healthy adults. The PCC is a key hub in the functional anatomy implicated in meditation and other perspectival processes. In this longitudinal study using a randomized design, we therefore examined the effect of a 10 h of mindfulness training, the Integrative Body-Mind Training (IBMT) on gray matter volume of the PCC compared to an active control—relaxation training (RT). We found that brief IBMT increased ventral PCC volume and that baseline temperamental trait—an index of individual differences was associated with a reduction in training-induced gray matter increases. Our findings indicate that brief mindfulness meditation induces gray matter plasticity, suggesting that structural changes in ventral PCC—a key hub associated with self-awareness, emotion, cognition, and aging—may have important implications for protecting against mood-related disorders and aging-related cognitive declines.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7704181/