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Classification of Single Normal and Alzheimer's Disease Individuals from Cortical Sources of Resting State EEG Rhythms

Publié dansFrontiers in neuroscience, vol. 10
Date de publication2016
Résumé

Previous studies have shown abnormal power and functional connectivity of resting state electroencephalographic (EEG) rhythms in groups of Alzheimer's disease (AD) compared to healthy elderly (Nold) subjects. Here we tested the best classification rate of 120 AD patients and 100 matched Nold subjects using EEG markers based on cortical sources of power and functional connectivity of these rhythms. EEG data were recorded during resting state eyes-closed condition. Exact low-resolution brain electromagnetic tomography (eLORETA) estimated the power and functional connectivity of cortical sources in frontal, central, parietal, occipital, temporal, and limbic regions. Delta (2-4 Hz), theta (4-8 Hz), alpha 1 (8-10.5 Hz), alpha 2 (10.5-13 Hz), beta 1 (13-20 Hz), beta 2 (20-30 Hz), and gamma (30-40 Hz) were the frequency bands of interest. The classification rates of interest were those with an area under the receiver operating characteristic curve (AUROC) higher than 0.7 as a threshold for a moderate classification rate (i.e., 70%). Results showed that the following EEG markers overcame this threshold: (i) central, parietal, occipital, temporal, and limbic delta/alpha 1 current density; (ii) central, parietal, occipital temporal, and limbic delta/alpha 2 current density; (iii) frontal theta/alpha 1 current density; (iv) occipital delta/alpha 1 inter-hemispherical connectivity; (v) occipital-temporal theta/alpha 1 right and left intra-hemispherical connectivity; and (vi) parietal-limbic alpha 1 right intra-hemispherical connectivity. Occipital delta/alpha 1 current density showed the best classification rate (sensitivity of 73.3%, specificity of 78%, accuracy of 75.5%, and AUROC of 82%). These results suggest that EEG source markers can classify Nold and AD individuals with a moderate classification rate higher than 80%.

Mots-clés
  • Alzheimer's disease (AD)
  • Alpha rhythms
  • Area under the receiver operating characteristic curve (AUROC)
  • Delta rhythms
  • Electroencephalography (EEG)
  • Exact low-resolution brain electromagnetic tomography (eLORETA)
  • Lagged linear connectivity
  • Spectral coherence
Citation (format ISO)
BABILONI, Claudio et al. Classification of Single Normal and Alzheimer’s Disease Individuals from Cortical Sources of Resting State EEG Rhythms. In: Frontiers in neuroscience, 2016, vol. 10. doi: 10.3389/fnins.2016.00047
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Article (Published version)
accessLevelPublic
Identifiants
ISSN du journal1662-453X
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Informations techniques

Création04/05/2016 15:52:00
Première validation04/05/2016 15:52:00
Heure de mise à jour15/03/2023 00:19:44
Changement de statut15/03/2023 00:19:43
Dernière indexation16/01/2024 20:45:17
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