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The relation of hippocampal subfield volumes to verbal episodic memory measured by the California Verbal Learning Test II in healthy adults

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https://hdl.handle.net/10037/13974
DOI
https://doi.org/10.1016/j.bbr.2018.06.008
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Accepted manuscript version, licensed CC BY-NC-ND 4.0. (PDF)
Date
2018-06-08
Type
Journal article
Tidsskriftartikkel
Peer reviewed

Author
Aslaksen, Per M; Bystad, Martin Kragnes; Ørbo, Marte; Vangberg, Torgil Riise
Abstract
Total hippocampal volume has previously been shown to correlate with performance on tests for verbal episodic memory. However, there are sparse evidence on how hippocampal subfield volumes are related to verbal episodic memory in healthy adults. The present study investigated the association between volumes of separate hippocampal subfields and verbal episodic memory performance in healthy volunteers. Forty-seven participants (31 females) between 20–71 years age underwent testing with the California Verbal Learning Test II (CVLT II), and the Wechsler Abbreviated Scale of Intelligence (WASI) to obtain an estimate of cognitive functioning. T1-weighted MR images were obtained after cognitive testing, and volumetric estimates adjusted for age and estimated total intracranial volume were calculated in the FreeSurfer 6.0 software suite for cerebral -and hippocampal structures. The sample performed within the statistical normal range on both CVLT II and WASI. Significant correlations adjusted for multiple testing were found between CVLT II subtests of total learning, free immediate recall and free delayed recall and volumes of the left Cornu Ammonis (CA) 1–4 subfields. There were no significant correlations between right hippocampal subfields and CVLT II performance, and no significant correlation between WASI results and hippocampal subfields. The present results suggest that better verbal episodic memory measured by the CVLT II is associated with relative larger volumes of specific left CA hippocampal subfields in healthy adults. Due to the small sample size and large age-span of the participants, the present findings are preliminary and should be confirmed in larger samples.
Is part of
Bystad, M.K. (2020). Transcranial Direct Current Stimulation as a memory enhancer in healthy participants and patients with Alzheimer`s disease. (Doctoral thesis). https://hdl.handle.net/10037/19913.
Publisher
Elsevier
Citation
Aslaksen, P.M., Bystad, M.K., Ørbo, M. & Vangberg, T.R. (2018). The relation of hippocampal subfield volumes to verbal episodic memory measured by the California Verbal Learning Test II in healthy adults. Behavioural Brain Research, 351, 131-137. https://doi.org/10.1016/j.bbr.2018.06.008
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