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Localization of Somatosensory Evoked Potentials in Primary Somatosensory Cortex: A Comparison Between PCA and MUSIC |
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| Authors: | Werner Mühlnickel Werner Lutzenberger Herta Flor |
| Affiliation: | (1) Department of Psychology, Clinical Psychology and Behavioral Neuroscience, Humboldt-University, Berlin, Germany;(2) Institute of Medical Psychology and Behavioral Neurobiology, University of Tübingen, Tübingen, Germany;(3) Department of Psychology, Humboldt-University, Berlin, Germany |
| Abstract: | The aim of this study was to test source modeling strategies for EEC-data from a clinical group of amputees. The experimental conditions (measuring time, age and condition of the patients) resulted in low quality EEC-data. Noise reduction was achieved by a principal component analysis (PCA) and a multiple signal classification (MUSIC). A comparison of the results of these two methods with traditional signal handling yielded superior results for the MUSIC algorithm. |
| Keywords: | Cortical reorganization EEG Dipole source localization PCA MUSIC |
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