Article (Scientific journals)
A multimodal assessment of the genetic control over working memory.
Karlsgodt, Katherine H.; Kochunov, Peter; Winkler, Anderson et al.
2010In Journal of Neuroscience, 30 (24), p. 8197-202
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Keywords :
Adult; Aged; Aged, 80 and over; Anisotropy; Brain/anatomy & histology/blood supply/physiology; Brain Mapping; Diffusion Magnetic Resonance Imaging; Female; Humans; Image Processing, Computer-Assisted/methods; Magnetic Resonance Imaging/methods; Male; Memory, Short-Term/physiology; Mexican Americans/genetics; Middle Aged; Nerve Fibers, Myelinated/physiology; Neural Pathways; Neuropsychological Tests; Oxygen/blood; Pedigree; Young Adult
Abstract :
[en] Working memory performance is significantly influenced by genetic factors. Here, we assessed genetic contributions to both working memory performance and neuroimaging measures focused on the network of brain regions associated with working memory by using a sample of 467 human participants from extended families. Imaging measures included diffusion tensor imaging indices in major white matter tracts thought to be associated with working memory and structural magnetic resonance imaging measures of frontal and parietal gray matter density. Analyses directly addressed whether working memory performance and neural structural integrity are influenced by common genetic factors (e.g., pleiotropy). While all cognitive measures, gray matter regions, and white matter tracts assessed were heritable, only performance on a spatial delayed response task and integrity of the superior longitudinal fasciculus (a primary fronto-parietal connection) shared genetic factors. As working memory may be a core component of other higher level processes, such as general intelligence, this finding has implications for the heritability of complex cognitive functions, as well as for our understanding of the transmission of cognitive deficits in mental and neurological disorders.
Disciplines :
Neurosciences & behavior
Author, co-author :
Karlsgodt, Katherine H.
Kochunov, Peter
Winkler, Anderson ;  Université de Liège - ULiège > Form. doc. sc. bioméd. & pharma.
Laird, Angela R.
Almasy, Laura
Duggirala, Ravindranath
Olvera, Rene L.
Fox, Peter T.
Blangero, John
Glahn, David C.
Language :
English
Title :
A multimodal assessment of the genetic control over working memory.
Publication date :
2010
Journal title :
Journal of Neuroscience
ISSN :
0270-6474
eISSN :
1529-2401
Publisher :
Society for Neuroscience, Washington, United States - District of Columbia
Volume :
30
Issue :
24
Pages :
8197-202
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 04 May 2017

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