Portland State University. Department of Electrical and Computer Engineering
Term of Graduation
Date of Publication
Master of Science (M.S.) in Electrical and Computer Engineering
Electrical and Computer Engineering
Evoked potentials (Electrophysiology), Filters (Mathematics), Mathematical statistics, Memory -- Testing
1 online resource (vi, 92 pages)
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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Yan, Yun, "ERP Analysis Using Matched Filtering, Correlation Coefficient and Mann-Whitney Test" (1997). Dissertations and Theses. Paper 6277.