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Sci Rep. 2017 Jul 11;7(1):5058. doi: 10.1038/s41598-017-05520-9.

Effects of gratitude meditation on neural network functional connectivity and brain-heart coupling.

Author information

1
Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, Republic of Korea.
2
Department of Communication, Yonsei University, Seoul, Republic of Korea.
3
Brain Korea 21 PLUS Project for Medical Science, Yonsei University, Seoul, Republic of Korea.
4
Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, Republic of Korea. jaejkim@yonsei.ac.kr.
5
Brain Korea 21 PLUS Project for Medical Science, Yonsei University, Seoul, Republic of Korea. jaejkim@yonsei.ac.kr.
6
Department of Psychiatry and Institute of Behavioral Science in Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea. jaejkim@yonsei.ac.kr.

Abstract

A sense of gratitude is a powerful and positive experience that can promote a happier life, whereas resentment is associated with life dissatisfaction. To explore the effects of gratitude and resentment on mental well-being, we acquired functional magnetic resonance imaging and heart rate (HR) data before, during, and after the gratitude and resentment interventions. Functional connectivity (FC) analysis was conducted to identify the modulatory effects of gratitude on the default mode, emotion, and reward-motivation networks. The average HR was significantly lower during the gratitude intervention than during the resentment intervention. Temporostriatal FC showed a positive correlation with HR during the gratitude intervention, but not during the resentment intervention. Temporostriatal resting-state FC was significantly decreased after the gratitude intervention compared to the resentment intervention. After the gratitude intervention, resting-state FC of the amygdala with the right dorsomedial prefrontal cortex and left dorsal anterior cingulate cortex were positively correlated with anxiety scale and depression scale, respectively. Taken together, our findings shed light on the effect of gratitude meditation on an individual's mental well-being, and indicate that it may be a means of improving both emotion regulation and self-motivation by modulating resting-state FC in emotion and motivation-related brain regions.

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