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Prediction of long-term memory scores in MCI based on resting-state fMRI
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2016 (engelsk)Inngår i: NeuroImage: Clinical, ISSN 0353-8842, E-ISSN 2213-1582, Vol. 12, s. 785-795Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Resting-state functional MRI (rs-fMRI) opens a window on large-scale organization of brain function. However, establishing relationships between resting-state brain activity and cognitive or clinical scores is still a difficult task, in particular in terms of prediction as would be meaningful for clinical applications such as early diagnosis of Alzheimer's disease. In this work, we employed partial least square regression under cross-validation scheme to predict episodic memory performance from functional connectivity (FC) patterns in a set of fifty-five MCI subjects for whom rs-fMRI acquisition and neuropsychological evaluation was carried out. We show that a newly introduced FC measure capturing the moments of anti-correlation between brain areas, discordance, contains key information to predict long-term memory scores in MCI patients, and performs better than standard measures of correlation to do so. Our results highlighted that stronger discordance within default mode network (DMN) areas, as well as across DMN, attentional and limbic networks, favor episodic memory performance in MCI.

sted, utgiver, år, opplag, sider
2016. Vol. 12, s. 785-795
HSV kategori
Identifikatorer
URN: urn:nbn:se:uu:diva-312290DOI: 10.1016/j.nicl.2016.10.004ISI: 000390196400089PubMedID: 27812505OAI: oai:DiVA.org:uu-312290DiVA, id: diva2:1062981
Tilgjengelig fra: 2017-01-09 Laget: 2017-01-09 Sist oppdatert: 2017-11-29bibliografisk kontrollert

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