title: A comparison of tripolar concentric ring electrode and spline Laplacians on a four-layer concentric spherical model.
abstract: We have simulated a four-layer concentric spherical head model. We calculated the spline and tripolar Laplacian estimates and compared them to the analytical Laplacian on the spherical surface. In the simulations we used five different dipole groups and two electrode configurations. The comparison shows that the tripolar Laplacian has higher correlation coefficient to the analytical Laplacian in the electrode configurations tested (19, standard 10/20 locations and 64 electrodes).
authors.affiliation: Department of Electrical, Computer, and Biomedical Engineering, University of Rhode Island, Kingston, RI, USA. liu@ele.uri.edu
authors.forename: Xiang
authors.initials: X
authors.lastname: Liu
authors.forename: Oleksandr
authors.initials: O
authors.lastname: Makeyev
authors.forename: Walter
authors.initials: W
authors.lastname: Besio
mesh_terms: D004566:Electrodes; D008962:Models, Theoretical