Evidence map›Paper›PMID 34867239›Full record

ArticleFrontiers in human neuroscience2021

Effects of Meditation on Structural Changes of the Brain in Patients With Mild Cognitive Impairment or Alzheimer's Disease Dementia.

Madhukar Dwivedi, Neha Dubey, Aditya Jain Pansari, Raju Surampudi Bapi, Meghoranjani Das, Maushumi Guha, Rahul Banerjee, Gobinda Pramanick, Jayanti Basu, Amitabha Ghosh

Open access · goldAbstract read
In one paragraph

Article in Frontiers in human neuroscience, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 4 pooled it
1.9field-weighted citation impact, top 13% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

10 citing papers in PubMed, 4 syntheses or guidelines pooled it, 20 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors at 5 institutions in 1 country.

Madhukar DwivediCognitive Science Lab, International Institute of Information Technology, Hyderabad, India.
Neha DubeyDepartment of Neurology, Apollo Gleneagles Hospital, Kolkata, India.
Aditya Jain PansariCognitive Science Lab, International Institute of Information Technology, Hyderabad, India.
Raju Surampudi BapiCognitive Science Lab, International Institute of Information Technology, Hyderabad, India.
Meghoranjani DasDepartment of Neurology, Apollo Gleneagles Hospital, Kolkata, India.
Maushumi GuhaDepartment of Philosophy, Jadavpur University, Kolkata, India.
Rahul BanerjeeCrystallography and Molecular Biology Division, Saha Institute of Nuclear Physics, Kolkata, India.
Gobinda PramanickDepartment of Radiology, Apollo Gleneagles Hospital, Kolkata, India.
Jayanti BasuDepartment of Applied Psychology, University of Calcutta, Kolkata, India.
Amitabha GhoshDepartment of Neurology, Apollo Gleneagles Hospital, Kolkata, India.
Apollo Gleneagles Hospitals · INInternational Institute of Information Technology, Hyderabad · INJadavpur University · INSaha Institute of Nuclear Physics · INUniversity of Calcutta · IN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Previous cross-sectional studies reported positive effects of meditation on the brain areas related to attention and executive function in the healthy elderly population. Effects of long-term regular meditation in persons with mild cognitive impairment (MCI) and Alzheimer's disease dementia (AD) have rarely been studied. In this study, we explored changes in cortical thickness and gray matter volume in meditation-naïve persons with MCI or mild AD after long-term meditation intervention. MCI or mild AD patients underwent detailed clinical and neuropsychological assessment and were assigned into meditation or non-meditation groups. High resolution T1-weighted magnetic resonance images (MRI) were acquired at baseline and after 6 months. Longitudinal symmetrized percentage changes (SPC) in cortical thickness and gray matter volume were estimated. Left caudal middle frontal, left rostral middle frontal, left superior parietal, right lateral orbitofrontal, and right superior frontal cortices showed changes in both cortical thickness and gray matter volume; the left paracentral cortex showed changes in cortical thickness; the left lateral occipital, left superior frontal, left banks of the superior temporal sulcus (bankssts), and left medial orbitofrontal cortices showed changes in gray matter volume. All these areas exhibited significantly higher SPC values in meditators as compared to non-meditators. Conversely, the left lateral occipital, and right posterior cingulate cortices showed significantly lower SPC values for cortical thickness in the meditators. In hippocampal subfields analysis, we observed significantly higher SPC in gray matter volume of the left CA1, molecular layer HP, and CA3 with a trend for increased gray matter volume in most other areas. No significant changes were found for the hippocampal subfields in the right hemisphere. Analysis of the subcortical structures revealed significantly increased volume in the right thalamus in the meditation group. The results of the study point out that long-term meditation practice in persons with MCI or mild AD leads to salutary changes in cortical thickness and gray matter volumes. Most of these changes were observed in the brain areas related to executive control and memory that are prominently at risk in neurodegenerative diseases.

Indexed as

Alzheimer’s diseasecortical thicknessgray matter volumeimagingmeditationmild cognitive impairmentneuropsychology

Identifiers

PMID34867239
PMCPMC8633496
OpenAlexW3212227146

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LicenceCC BY
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.