First Advisor

Fu Li

Term of Graduation

Spring 1997

Date of Publication

1997

Document Type

Thesis

Degree Name

Master of Science (M.S.) in Electrical and Computer Engineering

Department

Electrical and Computer Engineering

Language

English

Subjects

Evoked potentials (Electrophysiology), Filters (Mathematics), Mathematical statistics, Memory -- Testing

DOI

10.15760/etd.8137

Physical Description

1 online resource (vi, 92 pages)

Abstract

Event related potentials (ERPs) carry very important information that relate to the performance of the brain functions of a human being. Further studies have identified that the late positive complex (LPC) are affected by the memory process.

The matched filter method is used to improve the signal -to-noise ratio of signal ERPs. We use the output of the matched filter to distinguish the difference of the waveforms. In our study, we found that the peak values of the matched filter output differed among normal subjects and memory-impaired subjects.

The correlation coefficient is a statistical value that can be applied to find the degree of association between two EEG files. When there is a strong association between them, knowing one EEG file helps in predicting the other one.

A nonparametric statistical test, The Mann - Whitney Test, is introduced to set up The Filter Bank and The Correlation Bank. These two banks are very useful since the recognition percentage or correlation coefficient by the elements of the banks can distinguish whether the test subject belongs to the normal memory group or to the memory impaired group.

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Comments

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Persistent Identifier

https://archives.pdx.edu/ds/psu/39327

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