Date of Award

Summer 1987

Document Type

Thesis - Restricted

Degree Name

Master of Science (MS)


Biomedical Engineering

First Advisor

Ackmann, James

Second Advisor

Heinen, James A.

Third Advisor

Hoffman, Raymond S.


The somatosensory evoked potential has found growing acceptance as a supplement to the clinical assessment of neurologic condition. This thesis suggests a method for recognizing the changes which occur during continuous monitoring of the evoked response, specifically, cluster analysis of the Fourier Series Coefficients obtained from each waveform. The first chapter presents a brief introduction to evoked potentials, their use, and identifies the problem addressed in this thesis. Chapter 2 describes the evoked potential data and the signal processing of the data, including the calculation of the Fourier Series coefficients. Chapter 3 presents an overview of the statistical analysis performed on the coefficients and Chapter 4 discusses the results obtained from this analysis. Finally, Chapter 5 summarizes the results and makes further suggestions for analysis.



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