Title :
A comparison of tripolar concentric ring electrode and spline laplacians on a four-layer concentric spherical model
Author :
Liu, Xiang ; Makeyev, Oleksandr ; Besio, Walter
Author_Institution :
Dept. of Electr., Comput., & Biomed. Eng., Univ. of Rhode Island, Kingston, RI, USA
fDate :
Aug. 30 2011-Sept. 3 2011
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).
Keywords :
Laplace transforms; biomedical electrodes; brain models; electroencephalography; splines (mathematics); analytical Laplacian; correlation coefficient; electrode configurations; four-layer concentric spherical head model; spline Laplacians; tripolar Laplacian estimates; tripolar concentric ring electrode; Brain modeling; Electric potential; Electrodes; Electroencephalography; Laplace equations; Scalp; Spline; Electrodes; Models, Theoretical;
Conference_Titel :
Engineering in Medicine and Biology Society, EMBC, 2011 Annual International Conference of the IEEE
Conference_Location :
Boston, MA
Print_ISBN :
978-1-4244-4121-1
Electronic_ISBN :
1557-170X
DOI :
10.1109/IEMBS.2011.6090811
