Abstract:
:In the present study, we aim at investigating whether education modulates dynamical properties of time-varying whole-brain network connectivity (the chronnectome) in frontotemporal dementia (FTD) at a given level of symptom severity. Dynamic connectivity parameters were evaluated in 128 patients with FTD using independent component analysis, sliding-time window correlation, and k-means approach to resting state-magnetic resonance imaging data. We evaluated the relationship between education, a proxy measure of cognitive reserve, and 4 indexes of metastate dynamic connectivity: (1) the number of distinct metastates a patient passes through, (2) the number of switches from one metastate to another, (3) the span of the realized metastates, and (4) the total distance traveled in the state space. We found a significant inverse correlation between years of education and the 4 indexes of metastate dynamic fluidity (all p-values ≤ 0.03, false discovery rate-corrected). This study suggests that patients with FTD with higher education but comparable clinical severity show more global functional brain impairment, suggesting that patients with higher cognitive reserve can cope with more global brain fluidity reduction.
journal_name
Neurobiol Agingjournal_title
Neurobiology of agingauthors
Premi E,Cristillo V,Gazzina S,Benussi A,Alberici A,Cotelli MS,Calhoun VD,Iraji A,Magoni M,Cotelli M,Micheli A,Gasparotti R,Padovani A,Borroni Bdoi
10.1016/j.neurobiolaging.2020.04.021subject
Has Abstractpub_date
2020-09-01 00:00:00pages
35-43eissn
0197-4580issn
1558-1497pii
S0197-4580(20)30141-Xjournal_volume
93pub_type
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