Date on Master's Thesis/Doctoral Dissertation


Document Type

Master's Thesis

Degree Name

M. Eng.


Electrical and Computer Engineering

Committee Chair

Pierce, William H.


Electroencephalography--Mathematical models


A new procedure has been developed for determining the location of the source of certain EEG discharges given the measured surface potentials. The source is modeled as a single current dipole with arbitrary position and orientation, while the head is modeled either as a single homogeneous sphere or as three concentric spheres. This procedure is developed by extending the matched filter concept of communications theory to functions defined on a spherical surface. In addition, simplifications are developed which reduce the amount of computation required. Simulations have been performed using computer generated data to show the validity of the locating procedure and to investigate its sensitivity to changes in source location. It is shown that the new procedure has approximately the same accuracy as previously used techniques, and possible computational advantages of the new procedure are discussed.