Mindful Attention to the Breath Reduces Amygdala Activity

As so many of our patients are shallow breathers, I found this research on the effects of mindful attention to the breath (MATB) on prefrontal cortical and amygdala activity especially informative and relevant to patient care. Twenty-six healthy volunteers with no prior meditation experience were introduced to MATB by an experienced meditation teacher and instructed to practice a 20-minute audio guided MATB meditation daily for 2 weeks.¹ At the end of the 2-week training period, subjects underwent fMRI scanning while viewing distressing emotional images with MATB and with passive viewing (PV). Participants were shown aversive pictures or no pictures and were instructed to “Please focus your attention on your breath as you were instructed in the training” or “Please watch the picture without changing anything about your feelings.” Subjects indicated their current affect on a 7 point scale ranging from -3 (very negative) to +3 (very positive).

Breathing frequency significantly decreased during MATB compared to PV. Researchers controlled for this by including breathing frequency as a covariate in further behavioral and brain data analysis.

Analysis of affective ratings showed that participants felt significantly less negative affect when viewing distressing visual stimuli during MATB than PV. During negative visual stimuli, MATB significantly decreased bilateral amygdala activation compared to PV. Also, right amygdala activation decrease specifically correlated with successful emotional regulation. That is, those participants with greater reductions in right amygdala activation reported greater reductions in aversive emotions during the MATB. In addition, emotion-related functional connectivity increased between the prefrontal cortex and amygdala during the viewing of negative images and MATB.

It’s exciting to have some initial science behind the benefits of MATB. I teach all of my patients MATB and have found it rewarding to get feedback from participants in my courses about their integration of MATB into their own patient care. Patients with complex pain conditions can be challenging to treat, however sometimes a simple practice of taking 2 to 3 minutes prior to and/or at the end of a treatment to have a patient calmly focus on their breath with the mindful attitudes of acceptance, kindness and curiosity can help a person shift from tension and distress to calm and confidence. I look forward to presenting this and additional research on the impact of mindful meditation on brain structure and function in my upcoming course, Mindfulness-Based Pain Treatment, in Seattle, November 4 and 5. Hope to see you there!

1. Doll A, Holzel BK, Bratec SM, et al. Mindful attention to breath regulates emotions via increased amygdala-prefrontal cortex connectivity. Neuroimage. 2016;134:305-313.