Evidence map›Paper›PMID 23461767›Full record

ArticleBrain connectivity2013

Superficial white matter: effects of age, sex, and hemisphere.

Owen R Phillips, Kristi A Clark, Eileen Luders, Ramin Azhir, Shantanu H Joshi, Roger P Woods, John C Mazziotta, Arthur W Toga, Katherine L Narr

Abstract read
In one paragraph

Article in Brain connectivity, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 51 papers.

0numbers the graph read from it
0cells of the map it votes in
51citing papers in PubMed
–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

51 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Deletion of the X-chromosomal geneScience translational medicine · 2025
    Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Article
  11. Article
  12. Imaging of the superficial white matter in health and disease.Imaging neuroscience (Cambridge, Mass.) · 2024
    Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article
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

9 authors.

Owen R PhillipsLaboratory of Neuro Imaging, Department of Neurology, Geffen School of Medicine at UCLA, Los Angeles, California 90095-7334, USA.
Kristi A Clark
Eileen Luders
Ramin Azhir
Shantanu H Joshi
Roger P Woods
John C Mazziotta
Arthur W Toga
Katherine L Narr

Funding

ZDV &3TC NEVIRAPINE COMBINATION THERAPY IN HIV 1 INFECTED INFANTS &M01RR000865 · NCRR · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI WASHINGTON, ARNOLD E. · 1985 to 2011
$43.4M
YALE CENTER FOR THE: LEARNING &ATTENTIONP41RR013642 · NCRR · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI BEARER, ELAINE L · 1998 to 2011
$21.9M
A Probabilistic Reference System for the Human BrainP01EB001955 · NIBIB · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI MAZZIOTTA, JOHN C · 2003 to 2008
$5.5M
Imaging biomarkers of ECT response in major depressive disorderR01MH092301 · NIMH · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI ESPINOZA, RANDALL, NARR, KATHERINE L · 2011 to 2015
$4.0M
Changes in the reading network of dyslexia as measured by multimodal imagingK99HD065832 · NICHD · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI CLARK, KRISTI A · 2011 to 2012
$176k
EXTRAMURAL RESEARCH FACILITIES CONSTRUCTIONC06RR012169 · NCRR · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI MAZZIOTTA, JOHN C · 1996 to 1997
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NCRR NIH HHS P41 RR013642NCRR NIH HHS RR00865NCRR NIH HHS RR12169NIBIB NIH HHS 5P01-EB001955NICHD NIH HHS K99HD065832NIMH NIH HHS R01 MH092301PHS HHS P20-MHDA52176
6 · The paper itself

Abstract

Structural and diffusion imaging studies demonstrate effects of age, sex, and asymmetry in many brain structures. However, few studies have addressed how individual differences might influence the structural integrity of the superficial white matter (SWM), comprised of short-range association (U-fibers), and intracortical axons. This study thus applied a sophisticated computational analysis approach to structural and diffusion imaging data obtained from healthy individuals selected from the International Consortium for Brain Mapping (ICBM) database across a wide adult age range (n=65, age: 18-74 years, all Caucasian). Fractional anisotropy (FA), radial diffusivity (RD), and axial diffusivity (AD) were sampled and compared at thousands of spatially matched SWM locations and within regions-of-interest to examine global and local variations in SWM integrity across age, sex, and hemisphere. Results showed age-related reductions in FA that were more pronounced in the frontal SWM than in the posterior and ventral brain regions, whereas increases in RD and AD were observed across large areas of the SWM. FA was significantly greater in left temporoparietal regions in men and in the posterior callosum in women. Prominent leftward FA and rightward AD and RD asymmetries were observed in the temporal, parietal, and frontal regions. Results extend previous findings restricted to the deep white matter pathways to demonstrate regional changes in the SWM microstructure relating to processes of demyelination and/or to the number, coherence, or integrity of axons with increasing age. SWM fiber organization/coherence appears greater in the left hemisphere regions spanning language and other networks, while more localized sex effects could possibly reflect sex-specific advantages in information strategies.

Indexed as

AgingBrain MappingNerve Fibers, MyelinatedSex CharacteristicsAdolescentAdultAgedAnisotropyBrainDiffusion Magnetic Resonance ImagingFemaleFunctional LateralityHumansMagnetic Resonance ImagingMaleMiddle Aged

Identifiers

PMID23461767
PMCPMC3634148

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.