TY - JOUR
T1 - Abnormalities of resting-state functional cortical connectivity in patients with dementia due to Alzheimer's and Lewy body diseases
T2 - an EEG study
AU - Babiloni, Claudio
AU - Del Percio, Claudio
AU - Lizio, Roberta
AU - Noce, Giuseppe
AU - Lopez, Susanna
AU - Soricelli, Andrea
AU - Ferri, Raffaele
AU - Nobili, Flavio
AU - Arnaldi, Dario
AU - Famà, Francesco
AU - Aarsland, Dag
AU - Orzi, Francesco
AU - Buttinelli, Carla
AU - Giubilei, Franco
AU - Onofrj, Marco
AU - Stocchi, Fabrizio
AU - Stirpe, Paola
AU - Fuhr, Peter
AU - Gschwandtner, Ute
AU - Ransmayr, Gerhard
AU - Garn, Heinrich
AU - Fraioli, Lucia
AU - Pievani, Michela
AU - Frisoni, Giovanni B
AU - D'Antonio, Fabrizia
AU - De Lena, Carlo
AU - Güntekin, Bahar
AU - Hanoğlu, Lutfu
AU - Başar, Erol
AU - Yener, Görsev
AU - Emek-Savaş, Derya Durusu
AU - Triggiani, Antonio Ivano
AU - Franciotti, Raffaella
AU - Taylor, John Paul
AU - Vacca, Laura
AU - De Pandis, Maria Francesca
AU - Bonanni, Laura
N1 - Copyright © 2017 Elsevier Inc. All rights reserved.
PY - 2017/12/30
Y1 - 2017/12/30
N2 - Previous evidence showed abnormal posterior sources of resting-state delta (<4 Hz) and alpha (8-12 Hz) rhythms in patients with Alzheimer's disease with dementia (ADD), Parkinson's disease with dementia (PDD), and Lewy body dementia (DLB), as cortical neural synchronization markers in quiet wakefulness. Here, we tested the hypothesis of additional abnormalities in functional cortical connectivity computed in those sources, in ADD, considered as a "disconnection cortical syndrome", in comparison with PDD and DLB. Resting-state eyes-closed electroencephalographic (rsEEG) rhythms had been collected in 42 ADD, 42 PDD, 34 DLB, and 40 normal healthy older (Nold) participants. Exact low-resolution brain electromagnetic tomography (eLORETA) freeware estimated the functional lagged linear connectivity (LLC) from rsEEG cortical sources in delta, theta, alpha, beta, and gamma bands. The area under receiver operating characteristic (AUROC) curve indexed the classification accuracy between Nold and diseased individuals (only values >0.7 were considered). Interhemispheric and intrahemispheric LLCs in widespread delta sources were abnormally higher in the ADD group and, unexpectedly, normal in DLB and PDD groups. Intrahemispheric LLC was reduced in widespread alpha sources dramatically in ADD, markedly in DLB, and moderately in PDD group. Furthermore, the interhemispheric LLC in widespread alpha sources showed lower values in ADD and DLB than PDD groups. At the individual level, AUROC curves of LLC in alpha sources exhibited better classification accuracies for the discrimination of ADD versus Nold individuals (0.84) than for DLB versus Nold participants (0.78) and PDD versus Nold participants (0.75). Functional cortical connectivity markers in delta and alpha sources suggest a more compromised neurophysiological reserve in ADD than DLB, at both group and individual levels.
AB - Previous evidence showed abnormal posterior sources of resting-state delta (<4 Hz) and alpha (8-12 Hz) rhythms in patients with Alzheimer's disease with dementia (ADD), Parkinson's disease with dementia (PDD), and Lewy body dementia (DLB), as cortical neural synchronization markers in quiet wakefulness. Here, we tested the hypothesis of additional abnormalities in functional cortical connectivity computed in those sources, in ADD, considered as a "disconnection cortical syndrome", in comparison with PDD and DLB. Resting-state eyes-closed electroencephalographic (rsEEG) rhythms had been collected in 42 ADD, 42 PDD, 34 DLB, and 40 normal healthy older (Nold) participants. Exact low-resolution brain electromagnetic tomography (eLORETA) freeware estimated the functional lagged linear connectivity (LLC) from rsEEG cortical sources in delta, theta, alpha, beta, and gamma bands. The area under receiver operating characteristic (AUROC) curve indexed the classification accuracy between Nold and diseased individuals (only values >0.7 were considered). Interhemispheric and intrahemispheric LLCs in widespread delta sources were abnormally higher in the ADD group and, unexpectedly, normal in DLB and PDD groups. Intrahemispheric LLC was reduced in widespread alpha sources dramatically in ADD, markedly in DLB, and moderately in PDD group. Furthermore, the interhemispheric LLC in widespread alpha sources showed lower values in ADD and DLB than PDD groups. At the individual level, AUROC curves of LLC in alpha sources exhibited better classification accuracies for the discrimination of ADD versus Nold individuals (0.84) than for DLB versus Nold participants (0.78) and PDD versus Nold participants (0.75). Functional cortical connectivity markers in delta and alpha sources suggest a more compromised neurophysiological reserve in ADD than DLB, at both group and individual levels.
U2 - 10.1016/j.neurobiolaging.2017.12.023
DO - 10.1016/j.neurobiolaging.2017.12.023
M3 - Article
C2 - 29407464
VL - 65
SP - 18
EP - 40
JO - Neurobiology of Aging
JF - Neurobiology of Aging
SN - 0197-4580
ER -