Cited by 1,304Genetic Associations and EpidemiologyCognitive Abilities and TestingAdvanced Neuroimaging Techniques and Applications

Distinct Genetic Influences on Cortical Surface Area and Cortical Thickness

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Panizzon, Matthew S., Fennema-Notestine, Christine, Eyler, Lisa T., Jernigan, Terry L., Prom-Wormley, Elizabeth, Neale, Michael, Jacobson, Kristen, Lyons, Michael J. +8 more·2009·Cerebral Cortex

Abstract

Neuroimaging studies examining the effects of aging and neuropsychiatric disorders on the cerebral cortex have largely been based on measures of cortical volume. Given that cortical volume is a product of thickness and surface area, it is plausible that measures of volume capture at least 2 distinct sets of genetic influences. The present study aims to examine the genetic relationships between measures of cortical surface area and thickness. Participants were men in the Vietnam Era Twin Study of Aging (110 monozygotic pairs and 92 dizygotic pairs). Mean age was 55.8 years (range: 51-59). Bivariate twin analyses were utilized in order to estimate the heritability of cortical surface area and thickness, as well as their degree of genetic overlap. Total cortical surface area and average cortical thickness were both highly heritable (0.89 and 0.81, respectively) but were essentially unrelated genetically (genetic correlation = 0.08). This pattern was similar at the lobar and regional levels of analysis. These results demonstrate that cortical volume measures combine at least 2 distinct sources of genetic influences. We conclude that using volume in a genetically informative study, or as an endophenotype for a disorder, may confound the underlying genetic architecture of brain structure.

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  • Cellular mechanisms and heritability underlying SA expansion are thought to differ from mechanisms underlying cortical thickness.

    “Cellular mechanisms and heritability underlying SA expansion are thought to differ from mechanisms underlying cortical thickness 17,18 , and SA hyper-expansion has been reported in genetically-engineered mouse models of autism 19 .”
  • Area and thickness are genetically unrelated but often confounded in measures of cortical volume.

    “Area and thickness are genetically unrelated (39) but often confounded in measures of cortical volume, which is the product of the two.”

    From Multimodal imaging of the self-regulating developing brain (2012) · cites this paper as [39]

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Authors
Panizzon, M. S., Fennema-Notestine, C., Eyler, L. T., Jernigan, T. L., Prom-Wormley, E., Neale, M., Jacobson, K., Lyons, M. J., Grant, M. D., Franz, C. E., Xian, H., Tsuang, M., Fischl, B., Seidman, L., Dale, A., & Kremen, W. S.
Affiliations
  • University of California San Diego (US)
  • VA San Diego Healthcare System (US)
  • Virginia Commonwealth University (US)
  • University of Chicago (US)
  • Boston University (US)
  • Washington University in St. Louis (US)
  • Harvard University (US)
  • Massachusetts General Hospital (US)
Venue
Cerebral Cortex
Published
2009-03-18
Volume
19
Issue
11
Pages
2728-2735
ISSN
  • 1047-3211 (ISSN-L)
  • 1460-2199
OpenAlex
W2111884236
Cited by
1,304
References
54
Citations by year
2026: 71 · 2025: 65 · 2024: 68 · 2023: 99 · 2022: 78 · 2021: 113 · 2020: 101 · 2019: 100 · 2018: 97 · 2017: 78 · 2016: 88 · 2015: 85 · 2014: 69 · 2013: 59 · 2012: 54
FWCI
25.35
Type
journal article
Language
en
Open access
Locations
  • Cerebral Cortex (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • U.S. Department of Defense
  • U.S. Department of Veterans Affairs (U24 RR021382)
  • Temple University
  • National Institutes of Health (R01 AG18386)
  • National Institute on Aging (R01AG22381, R01 AG18386, R01AG022982, R01 AG18384, R01AG022381, R01AG018384, R01AG-22982, R01AG018386)
  • National Center for Research Resources (U24RR021382)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Cognitive Abilities and Testing
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced Neuroimaging Techniques and Applications
Keywords
cortical surface area, cortical thickness, heritability, genetic correlation, cortical volume, endophenotypes, twin studies, aging
MeSH terms
Cerebral Cortex, Humans, Male, Middle Aged, Organ Size, Twins

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