Source potential mapping: a new modality to image neural electric activities.
A new neural electric imaging modality-source potential mapping (SPM)-is presented here, which images the neural sources by the potential produced by the sources in a homogeneous infinite conducting medium. Compared with the extant cortical surface potential mapping (CPM). SPM is a more direct reflection of the sources and is a simpler physical model, thus assuring easy understanding. The simulations show that SPM has a slightly higher spatial resolution than CPM and the calculation of SPM is more economical than that of CPM.
Yao
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The College of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, People's Republic of China. dyao@uestc.edu.cn
D001698:Biomedical Engineering; D001703:Biophysics / Q000379:methods*; D018780:Body Surface Potential Mapping / Q000379:methods*; D003198:Computer Simulation; D004553:Electric Conductivity; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods; D015233:Models, Statistical