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EEG Window Length Evaluation for the Detection of Alzheimer's Disease over Different Brain Regions.

TitleEEG Window Length Evaluation for the Detection of Alzheimer's Disease over Different Brain Regions.
Publication TypeJournal Article
Year of Publication2019
AuthorsTzimourta, K. D., Giannakeas N., Tzallas A. T., Astrakas L. G., Afrantou T., Ioannidis P., Grigoriadis N., Angelidis P., Tsalikakis D. G., & Tsipouras M. G.
JournalBrain Sci
Date Published2019 Apr 14

Alzheimer's Disease () is a neurogenerative disorder and the most common type of dementia with a rapidly increasing world prevalence. In this paper, the ability of several statistical and spectral features to detect from electroencephalographic () recordings is evaluated. For this purpose, clinical recordings from 14 patients with (8 with mild and 6 with moderate ) and 10 healthy, age-matched individuals are analyzed. The signals are initially segmented in nonoverlapping epochs of different lengths ranging from 5 s to 12 s. Then, a group of statistical and spectral features calculated for each rhythm (δ, θ, α, β, and γ) are extracted, forming the feature vector that trained and tested a Random Forests classifier. Six classification problems are addressed, including the discrimination from whole-brain dynamics and separately from specific brain regions in order to highlight any alterations of the cortical regions. The results indicated a high accuracy ranging from 88.79% to 96.78% for whole-brain classification. Also, the classification accuracy was higher at the posterior and central regions than at the frontal area and the right side of temporal lobe for all classification problems.

Alternate JournalBrain Sci
PubMed ID31013964
PubMed Central IDPMC6523667


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