Short-term meditation modulates EEG activity in subjects with post-traumatic residual disabilities.
Author: Hata M1, Hayashi N1,2, Ishii R1,3, Canuet L4, Pascual-Marqui RD5,6, Aoki Y1,7, Ikeda S6, Sakamoto T2,8, Iwata M2,8, Kimura K8, Iwase M1, Ikeda M1, Ito T2
Affiliation:
1Department of Psychiatry, Osaka University Graduate School of Medicine, Suita, Japan.
2Department of Integrative Medicine, Osaka University Graduate School of Medicine, Suita, Japan.
3Department of Palliative Care, Ashiya Municipal Hospital, Ashiya, Japan.
4Department of Cognitive, Social and Organizational Psychology, Universidad de La Laguna, San Cristóbal de La Laguna, Spain.
5The KEY Institute for Brain-Mind Research, University Hospital of Psychiatry, Zurich, Switzerland.
6Department of Psychiatry, Kansai Medical University, Moriguchi, Japan.
7Nippon Life Hospital, Osaka, Japan.
8Japan Yoga Therapy Society, Japan.
Conference/Journal: Clin Neurophysiol Pract.
Date published: 2019 Feb 20
Other:
Volume ID: 4 , Pages: 30-36 , Special Notes: doi: 10.1016/j.cnp.2019.01.003. eCollection 2019. , Word Count: 265
Objective: Neurophysiological changes related to meditation have recently attracted scientific attention. We aimed to detect changes in electroencephalography (EEG) parameters induced by a meditative intervention in subjects with post-traumatic residual disability (PTRD), which has been confirmed for effectiveness and safety in a previous study. This will allow us to estimate the objective effect of this intervention at the neurophysiological level.
Methods: Ten subjects with PTRD were recruited and underwent psychological assessment and EEG recordings before and after the meditative intervention. Furthermore, 10 additional subjects were recruited as normal controls. Source current density as an EEG parameter was estimated by exact Low Resolution Electromagnetic Tomography (eLORETA). Comparisons of source current density in PTRD subjects after the meditative intervention with normal controls were investigated. Additionally, we compared source current density in PTRD subjects between before and after meditative intervention. Correlations between psychological assessments and source current density were also explored.
Results: After meditative intervention, PTRD subjects exhibited increased gamma activity in the left inferior parietal lobule relative to normal controls. In addition, changes of delta activity in the right precuneus correlated with changes in the psychological score on role physical item, one of the quality of life scales reflecting the work or daily difficulty due to physical problems.
Conclusions: These results show that the meditative intervention used in this study produces neurophysiological changes, in particular the modulation of oscillatory activity of the brain.
Significance: Our meditative interventions might induce the neurophysiological changes associated with the improvement of psychological symptoms in the PTRD subjects.
KEYWORDS: Delta band; EEG; Gamma band; Meditation; PTRD; eLORETA
PMID: 30886941 PMCID: PMC6402287 DOI: 10.1016/j.cnp.2019.01.003
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