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A multichannel, model-free method for estimation of event-related potential amplitudes and its comparison with dipole source localization
| Content Provider | Scilit |
|---|---|
| Author | Cardenas, V. A. Yingling, C. D. Jewett, D. Fein, G. |
| Copyright Year | 1995 |
| Description | Journal: Journal of Medical Engineering & Technology We present a multichannel, model-free method for estimation of event-related potential (ERP) amplitude ratios and amplitudes using singular value decomposition (SVD), and compare with the Dipole Components Model (DCM). When the ERPs are generated by a single or multiple dipoles with equal amplitude ratios, the SVD method is superior to DCM in terms of reliable estimation of amplitude and is comparable with DCM for reliable and unbiased estimation of amplitude ratios. We show that dipole model misspecification leads to unbiased amplitude ratios and biased amplitudes when the ERP data sets are (I) generated and fit with a sin& dipole, or (2) generated by N dipoles with equal amplitude ratios and jt with M ⩽ N dipoles, because the effect of model misspecification cancels for a ratio. Similarly proof that DCM estimates amplitude ratios more ratios than amplitudes for these cases is given. |
| Related Links | http://www.tandfonline.com/doi/pdf/10.3109/03091909509030282 |
| Ending Page | 98 |
| Page Count | 11 |
| Starting Page | 88 |
| ISSN | 03091902 |
| e-ISSN | 1464522X |
| DOI | 10.3109/03091909509030282 |
| Journal | Journal of Medical Engineering & Technology |
| Issue Number | 2-3 |
| Volume Number | 19 |
| Language | English |
| Publisher | Informa UK Limited |
| Publisher Date | 1995-01-01 |
| Access Restriction | Open |
| Subject Keyword | Journal: Journal of Medical Engineering & Technology Acoustics and Ultrasonics Because the Effect Ofmodel Misspecjtication 'canceh 'for a Ratio. Similurb Proofthat Dcm Estimates Amplitude Ratios More Reliabh Than Amplitudes for These Cases Equal Amplitude Ratios Andjt with Ms Jv Dipoles Event Related Potential |
| Content Type | Text |
| Subject | Medicine Biomedical Engineering |
