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@ARTICLE{Hasoon:272081,
author = {Hasoon, Jahfer and Hamilton, Calum A and Schumacher, Julia
and Colloby, Sean and Donaghy, Paul C and Thomas, Alan J and
Taylor, John-Paul},
title = {{EEG} {F}unctional {C}onnectivity {D}ifferences {P}redict
{F}uture {C}onversion to {D}ementia in {M}ild {C}ognitive
{I}mpairment {W}ith {L}ewy {B}ody or {A}lzheimer {D}isease.},
journal = {International journal of geriatric psychiatry},
volume = {39},
number = {9},
issn = {0885-6230},
address = {Chichester [u.a.]},
publisher = {Wiley},
reportid = {DZNE-2024-01124},
pages = {e6138},
year = {2024},
abstract = {Predicting which individuals may convert to dementia from
mild cognitive impairment (MCI) remains difficult in
clinical practice. Electroencephalography (EEG) is a widely
available investigation but there is limited research
exploring EEG connectivity differences in patients with MCI
who convert to dementia.Participants with a diagnosis of MCI
due to Alzheimer's disease (MCI-AD) or Lewy body disease
(MCI-LB) underwent resting state EEG recording. They were
followed up annually with a review of the clinical diagnosis
(n = 66). Participants with a diagnosis of dementia at year
1 or year 2 follow up were classed as converters (n = 23)
and those with a diagnosis of MCI at year 2 were classed as
stable (n = 43). We used phase lag index (PLI) to estimate
functional connectivity as well as analysing dominant
frequency (DF) and relative band power. The Network-based
statistic (NBS) toolbox was used to assess differences in
network topology.The converting group had reduced DF (U =
285.5, p = 0.005) and increased relative pre-alpha power (U
= 702, p = 0.005) consistent with previous findings. PLI
showed reduced average beta band synchrony in the converting
group (U = 311, p = 0.014) as well as significant
differences in alpha and beta network topology. Logistic
regression models using regional beta PLI values revealed
that right central to right lateral (Sens = $56.5\%,$ Spec =
$86.0\%,$ -2LL = 72.48, p = 0.017) and left central to right
lateral (Sens = $47.8\%,$ Spec = $81.4\%,$ -2LL = 71.37, p =
0.012) had the best classification accuracy and fit when
adjusted for age and MMSE score.Patients with MCI who
convert to dementia have significant differences in EEG
frequency, average connectivity and network topology prior
to the onset of dementia. The MCI group is clinically
heterogeneous and have underlying physiological differences
that may be driving the progression of cognitive symptoms.
EEG connectivity could be useful to predict which patients
with MCI-AD and MCI-LB convert to dementia, regardless of
the neurodegenerative aetiology.},
keywords = {Humans / Cognitive Dysfunction: physiopathology / Cognitive
Dysfunction: etiology / Lewy Body Disease: physiopathology /
Female / Alzheimer Disease: physiopathology /
Electroencephalography: methods / Male / Aged / Disease
Progression / Aged, 80 and over / Lewy body disease (Other)
/ cognitive dysfunction (Other) / dementia (Other) / disease
progression (Other) / electroencephalography (Other) /
functional connectivity (Other) / prediction (Other)},
cin = {AG Storch},
ddc = {610},
cid = {I:(DE-2719)5000014},
pnm = {353 - Clinical and Health Care Research (POF4-353)},
pid = {G:(DE-HGF)POF4-353},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:39261275},
doi = {10.1002/gps.6138},
url = {https://pub.dzne.de/record/272081},
}