EEG beta 2 power as surrogate marker for memory impairment: a pilot study

International Psychogeriatrics
Andreas K KaiserBernhard Iglseder

Abstract

Memory deficits are dominant in dementia and are positively correlated with electroencephalographic (EEG) beta power. EEG beta power can predict the progression of Alzheimer´s (AD) as early as at the stage of mild cognitive impairment (MCI) and could possibly be used as surrogate marker for memory impairment. The objective of this study is to analyze the relationship between frontal and parietal EEG beta power and memory-test outcome. Frontal and parietal beta power is analyzed for a resting state and an eyes-closed backward counting condition and related to memory impairment parameters. A total of 28 right-handed female geriatric patients (mean age = 80.6) participated voluntarily in this study. Beta 1 (12.9-19.2 Hz) and beta 2 (19.2-32.4 Hz) EEG power at F3, F4, Fz, P3, P4, and Pz are correlated with immediate wordlist recall, delayed wordlist recall, recognition of learned words, and delayed figure recall. For classification between impaired and intact memory, we calculated a binary logistic regression model with memory impairment as a dependent variable and beta 2 power as an independent variable. We found significant positive correlations between frontal and parietal beta power and delayed memory recall. A significant corr...Continue Reading

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Citations

May 7, 2021·Computer Methods and Programs in Biomedicine·Oluwagbenga Paul IdowuGuanglin Li
Jul 21, 2021·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Yağmur ÖzbekGörsev G Yener

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