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2012-02-23
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Article Posted by szleski - Last updated: 2012-02-23
Title
Current Source Density Reconstruction from Incomplete Data
File incomplete csd.pdf
Short Description
Neural Computation article
Description We propose two ways of estimating current source density (CSD) from measurements of voltage on a Cartesian grid with missing recording points using the inverse CSD method. The simplest approach is to sub- stitute local averages (LA) in place of missing data. A more elaborate alternative is to estimate a smaller number of CSD parameters than the actual number of recordings and to take the least-squares fit (LS). We compare the two approaches in the three-dimensional case on several sets of surrogate and experimental data, for varying numbers of missing data points, and discuss their advantages and drawbacks. One can con- struct CSD distributions for which one or the other approach is better. However, in general, the LA method is to be recommended as being more stable and more robust to variations in the recorded fields.
Bibliographic Information Neural Computation 22, 48–60 (2010), ©2009 Massachusetts Institute of Technology
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Original Release Date
2012/01/17 02:07:00 GMT+1
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