Evidence map›Paper›PMID 22815233›Full record

ArticleHuman brain mapping2013

Global and regional alterations of hippocampal anatomy in long-term meditation practitioners.

Eileen Luders, Paul M Thompson, Florian Kurth, Jui-Yang Hong, Owen R Phillips, Yalin Wang, Boris A Gutman, Yi-Yu Chou, Katherine L Narr, Arthur W Toga

Abstract read
In one paragraph

Article in Human brain mapping, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 55 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
55citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

55 citing papers in PubMed, 1 synthesis or guideline pooled it.

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  10. High-Dimensional Spatial Quantile Function-on-Scalar Regression.Journal of the American Statistical Association · 2022
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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.

Eileen LudersLaboratory of Neuro Imaging, Department of Neurology, UCLA School of Medicine, Los Angeles, California.
Paul M Thompson
Florian Kurth
Jui-Yang Hong
Owen R Phillips
Yalin Wang
Boris A Gutman
Yi-Yu Chou
Katherine L Narr
Arthur W Toga

Funding

YALE CENTER FOR THE: LEARNING &ATTENTIONP41RR013642 · NCRR · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI BEARER, ELAINE L · 1998 to 2011
$21.9M
TR&D3: Intrinsic Surface MappingP41EB015922 · NIBIB · UNIVERSITY OF SOUTHERN CALIFORNIA · PI THOMPSON, PAUL M · 2012 to 2022
$14.1M
Predictors of Alheimers Disease in Mild Cognitive ImpairmentR01AG020098 · NIA · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI LOPEZ, OSCAR L. · 2002 to 2011
$3.7M
Alzheimer's disease risk analyzed using population imaging genomicsR01AG040060 · NIA · UNIVERSITY OF SOUTHERN CALIFORNIA · PI THOMPSON, PAUL M · 2011 to 2016
$2.5M
A Multidimensional Alzheimer's Disease Brain AtlasR01EB008281 · NIBIB · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI THOMPSON, PAUL M · 2007 to 2010
$1.4M
Computational Modeling of High-Field MR ImagesR01EB007813 · NIBIB · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI THOMPSON, PAUL M · 2007 to 2010
$1.3M
EXTRAMURAL RESEARCH FACILITIES CONSTRUCTIONC06RR012169 · NCRR · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI MAZZIOTTA, JOHN C · 1996 to 1997
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NCRR NIH HHS C06 RR012169NCRR NIH HHS P41 RR013642NIA NIH HHS R01 AG020098NIA NIH HHS R01 AG040060NIBIB NIH HHS P41 EB015922NIBIB NIH HHS R01 EB007813NIBIB NIH HHS R01 EB008281
6 · The paper itself

Abstract

Studies linking meditation and brain structure are still relatively sparse, but the hippocampus is consistently implicated as one of the structures altered in meditation practitioners. To explore hippocampal features in the framework of meditation, we analyzed high-resolution structural magnetic resonance imaging data from 30 long-term meditators and 30 controls, closely matched for sex, age, and handedness. Hippocampal formations were manually traced following established protocols. In addition to calculating left and right hippocampal volumes (global measures), regional variations in surface morphology were determined by measuring radial distances from the hippocampal core to spatially matched surface points (local measures). Left and right hippocampal volumes were larger in meditators than in controls, significantly so for the left hippocampus. The presence and direction of this global effect was confirmed locally by mapping the exact spatial locations of the group differences. Altogether, radial distances were larger in meditators compared to controls, with up to 15% difference. These local effects were observed in several hippocampal regions in the left and right hemisphere though achieved significance primarily in the left hippocampal head. Larger hippocampal dimensions in long-term meditators may constitute part of the underlying neurological substrate for cognitive skills, mental capacities, and/or personal traits associated with the practice of meditation. Alternatively, given that meditation positively affects autonomic regulation and immune activity, altered hippocampal dimensions may be one result of meditation-induced stress reduction. However, given the cross-sectional design, the lack of individual stress measures, and the limited resolution of brain data, the exact underlying neuronal mechanisms remain to be established.

Indexed as

Brain MappingNegotiatingAdultCase-Control StudiesFemaleFunctional LateralityHippocampusHumansImaging, Three-DimensionalLongitudinal StudiesMagnetic Resonance ImagingMaleMiddle AgedYoung AdultbrainhippocampusmappingmeditatormindfulnessMRI

Identifiers

PMID22815233
PMCPMC4084509

What OpenQuestion holds

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Registered trials

None linked

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.