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A realistic spatiotemporal source model for EEG activity: Application to the reconstruction of epileptic depth-EEG signals.

Abstract : The context of this work is the interpretation of depth-EEG signals recorded in epileptic patients. This study focuses on the relationship between spatial and temporal properties of neuronal sources and depth-EEG signals observed along intracerebral electrodes (source/sensor relationship). We developed an extended source model which connects two levels of representation: a model of coupled neuronal populations and a distributed current dipole model. This model was used to simulate epileptic spiking depth-EEG signals from the forward solution at each intracerebral sensor location. Results showed that realistic spikes were obtained in the model under two specific conditions: a sufficiently large spatial extension of the neocortical source and a high degree of coupling between activated neuronal populations composing this extended source.
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https://www.hal.inserm.fr/inserm-00183645
Contributor : Lotfi Senhadji <>
Submitted on : Tuesday, October 30, 2007 - 4:47:45 PM
Last modification on : Wednesday, May 16, 2018 - 11:23:08 AM
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Delphine Cosandier-Rimele, Jean-Michel Badier, Fabrice Wendling. A realistic spatiotemporal source model for EEG activity: Application to the reconstruction of epileptic depth-EEG signals.. Conference proceedings : .. Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference, Institute of Electrical and Electronics Engineers (IEEE), 2006, 1, pp.4253-6. ⟨10.1109/IEMBS.2006.260678⟩. ⟨inserm-00183645⟩

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