Comput Methods Programs Biomed - Spectral and complexity analysis of scalp EEG characteristics for mild cognitive impairment and early Alzheimer's disease.

Tópicos

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Resumo

Amnestic mild cognitive impairment (aMCI) often is an early stage of Alzheimer's disease (AD). MCI is characterized by cognitive decline departing from normal cognitive aging but that does not significantly interfere with daily activities. This study explores the potential of scalp EEG for early detection of alterations from cognitively normal status of older adults signifying MCI and AD. Resting 32-channel EEG records from 48 age-matched participants (mean age 75.7 years)-15 normal controls (NC), 16 early MCI, and 17 early stage AD-are examined. Regional spectral and complexity features are computed and used in a support vector machine model to discriminate between groups. Analyses based on three-way classifications demonstrate overall discrimination accuracies of 83.3%, 85.4%, and 79.2% for resting eyes open, counting eyes closed, and resting eyes closed protocols, respectively. These results demonstrate the great promise for scalp EEG spectral and complexity features as noninvasive biomarkers for detection of MCI and early AD.

Resumo Limpo

amnest mild cognit impair amci often earli stage alzheim diseas ad mci character cognit declin depart normal cognit age signific interfer daili activ studi explor potenti scalp eeg earli detect alter cognit normal status older adult signifi mci ad rest channel eeg record agematch particip mean age year normal control nc earli mci earli stage adar examin region spectral complex featur comput use support vector machin model discrimin group analys base threeway classif demonstr overal discrimin accuraci rest eye open count eye close rest eye close protocol respect result demonstr great promis scalp eeg spectral complex featur noninvas biomark detect mci earli ad

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