Paper Info
Title
Complexity Measures for Quantifying Changes in Electroencephalogram in Alzheimer's Disease.
Abstract
Alzheimer's disease (AD) is a progressive disorder that affects cognitive brain functions and starts many years before its clinical manifestations. A biomarker that provides a quantitative measure of changes in the brain due to AD in the early stages would be useful for early diagnosis of AD, but this would involve dealing with large numbers of people because up to 50% of dementia sufferers do not receive formal diagnosis. Thus, there is a need for accurate, low-cost, and easy to use biomarkers that could be used to detect AD in its early stages. Potentially, electroencephalogram (EEG) based biomarkers can play a vital role in early diagnosis of AD as they can fulfill these needs. This is a cross-sectional study that aims to demonstrate the usefulness of EEG complexity measures in early AD diagnosis. We have focused on the three complexity methods which have shown the greatest promise in the detection of AD, Tsallis entropy (TsEn), Higuchi Fractal Dimension (HFD), and Lempel-Ziv complexity (LZC) methods. Unlike previous approaches, in this study, the complexity measures are derived from EEG frequency bands (instead of the entire EEG) as EEG activities have significant association with AD and this has led to enhanced performance. The results show that AD patients have significantly lower TsEn, HFD, and LZC values for specific EEG frequency bands and for specific EEG channels and that this information can be used to detect AD with a sensitivity and specificity of more than 90%.
Year
DOI
Venue
2018
10.1155/2018/8915079
COMPLEXITY
Field
DocType
Volume
Disease,Neuroscience,Progressive disorder,Tsallis entropy,Biomarker (medicine),Artificial intelligence,Cognition,Mathematics,Electroencephalography,Machine learning,Dementia
Journal
2018
ISSN
Citations 
PageRank 
1076-2787
2
0.37
References 
Authors
10
4
Name
Order
Citations
PageRank
Ali H. Husseen Al-nuaimi120.37
Emmanuel Jammeh21459.17
Lingfen Sun341838.26
Emmanuel C. Ifeachor425526.56