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Serotonergic and cholinergic modulation of functional brain connectivity: A comparison between young and older adults

Aging is accompanied by changes in neurotransmission. To advance our understanding of how aging modifies specific neural circuitries, we examined serotonergic and cholinergic stimulation with resting state functional magnetic resonance imaging (RS-fMRI) in young and older adults. The instant respons...

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Bibliographic Details
Published in:NeuroImage (Orlando, Fla.) Fla.), 2018-04, Vol.169, p.312-322
Main Authors: Klaassens, Bernadet L., van Gerven, Joop M.A., Klaassen, Erica S., van der Grond, Jeroen, Rombouts, Serge A.R.B.
Format: Article
Language:English
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Summary:Aging is accompanied by changes in neurotransmission. To advance our understanding of how aging modifies specific neural circuitries, we examined serotonergic and cholinergic stimulation with resting state functional magnetic resonance imaging (RS-fMRI) in young and older adults. The instant response to the selective serotonin reuptake inhibitor citalopram (30 mg) and the acetylcholinesterase inhibitor galantamine (8 mg) was measured in 12 young and 17 older volunteers during a randomized, double blind, placebo-controlled, crossover study. A powerful dataset consisting of 522 RS-fMRI scans was obtained by acquiring multiple scans per subject before and after drug administration. Group × treatment interaction effects on voxelwise connectivity with ten functional networks were investigated (p 
ISSN:1053-8119
1095-9572
DOI:10.1016/j.neuroimage.2017.12.035