Date of Award

Spring 1978

Document Type

Thesis - Restricted

Degree Name

Master of Science (MS)


Electrical and Computer Engineering


The somatosensory evoked potential is a very low amplitude signal. It is subject to noise from a variety of environmental sources. A spectral analysis was performed on a number of evoked potentials to determine the frequency range of the signal. Based on the results of the frequency analysis a digital filter was designed and implemented. The results indicate that the evoked potential has a frequency content from D.C. to approximately 200 Hz. A low pass digital filter with an appropriate cutoff frequency will eliminate much of the noise.



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