Title :
A new realistic geometry spline Laplacian algorithm and its application to VEP
Author :
Zhao, Feng ; Wu, Dalei ; Krumick, G. ; Li, Yuhua ; Wu, Dalei ; He, Benteng
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Illinois Univ., Chicago, IL, USA
fDate :
29 Oct-1 Nov 1998
Abstract :
We have developed a new algorithm to estimate the surface Laplacian of the scalp potential on a realistic geometry scalp surface. The performance of the algorithm was evaluated by computer simulations. The algorithm was applied to study the scalp Laplacian maps of visual evoked potentials induced by pattern onset stimuli in a human subject. The present results indicate the excellent performance of the newly developed algorithm and its potential for application in imaging brain electrical activity
Keywords :
Laplace transforms; digital simulation; electroencephalography; medical signal processing; visual evoked potentials; brain electrical activity; computer simulations; human subject; imaging; pattern onset stimuli; realistic geometry scalp surface; realistic geometry spline Laplacian algorithm; scalp Laplacian maps; scalp potential; surface Laplacian; visual evoked potentials; Brain modeling; Computer simulation; Electrodes; Electroencephalography; Geometry; Helium; Humans; Laplace equations; Scalp; Spline;
Conference_Titel :
Engineering in Medicine and Biology Society, 1998. Proceedings of the 20th Annual International Conference of the IEEE
Conference_Location :
Hong Kong
Print_ISBN :
0-7803-5164-9
DOI :
10.1109/IEMBS.1998.747043
