INVESTIGADORES
HURTADO Martin
congresos y reuniones científicas
Título:
Electromagnetic source imaging for sparse cortical activation patterns
Autor/es:
N. VON ELLENRIEDER; M. HURTADO; C. MURAVCHIK
Lugar:
Buenos Aires
Reunión:
Congreso; Int. Conf. of the IEEE Engineering in Medicine and Biology Society; 2010
Institución organizadora:
IEEE Engineering in Medicine and Biology Society
Resumen:
We propose modifications to the AutomaticRelevance Determination (ARD) algorithm for solving theEEG/MEG inverse problem when the activation map of thecortex is known to be sparse. We propose to include a term toaccount for the background noise activity, i.e. electric activityof sources not in the cortex. Also, we prune the results ofthe ARD algorithm using a Model Selection criterion to getsparser results. Simulations with a realistic head model show avery important reduction of the number of sources incorrectlydetected as active.
