Electrode position scaling in realistic laplacian computation
Language English Country United States Media print
Document type Evaluation Study, Journal Article, Research Support, Non-U.S. Gov't
- MeSH
- Algorithms * MeSH
- Diagnosis, Computer-Assisted methods MeSH
- Electrodes * MeSH
- Electroencephalography instrumentation methods MeSH
- Humans MeSH
- Brain Mapping instrumentation methods MeSH
- Models, Neurological * MeSH
- Computer Simulation MeSH
- Check Tag
- Humans MeSH
- Publication type
- Journal Article MeSH
- Evaluation Study MeSH
- Research Support, Non-U.S. Gov't MeSH
This note discusses the effects of the electrode position scaling on the realistic Laplacian (RL) computation. It is shown that when the RL is estimated with the help of Tikhonov regularization and the generalized cross-validation (GCV) criterion, improper electrode position scaling may influence the GCV criterion, which results in the decrease of RL precision. We identify what the proper scaling should be, and we provide a closer examination of how the GCV criterion is affected by the electrode position scaling.
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