Date Approved

4-25-2007

Embargo Period

3-28-2016

Document Type

Thesis

Degree Name

M.S. in Electrical Engineering

Department

Electrical & Computer Engineering

College

Henry M. Rowan College of Engineering

First Advisor

Polikar, Robi

Subject(s)

Alzheimer's disease--Diagnosis; Electroencephalography; Signal processing

Disciplines

Electrical and Computer Engineering

Abstract

Alzheimer's disease (AD) is a neurological disorder characterized by nerve degeneration and neuronal death. The diagnosis of AD at an early stage is a major concern due to growing number of elderly people affected by the disease, as well as the lack of a standard diagnosis procedure available to community clinics. A biomarker that will allow early diagnosis of the disease would be beneficial. Such biomarker should be noninvasive, simple to obtain, safe, inexpensive, accurate, and most importantly, must be made available to local health clinics for maximum effectiveness.

Recent studies have used wavelets and other signal processing methods to analyze EEG signals in an attempt to find a noninvasive biomarker for AD. In this study, multiresolution wavelet analysis was performed on event related potentials (ERPs) of electroencephalogram (EEG) signals. Extracted feature sets were then used to train the ensemble system, based on stacked generalization algorithm, and individual decisions were calculated and compared. The ensemble decisions from individual data sources (specific electrode - stimuli - frequency band combinations) were combined using different data fusion techniques for further analyses. Particular emphasis was made for the value of procedure in the diagnosis of the disease at its earliest stage.

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