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Multi-subject MEG/EEG source imaging with sparse multi-task regression

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Academic year: 2021

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Fig. 1. Levels of the W distance in cm (a.k.a Earth mover distance) computed between a fixed blurred activation a (green) and all focal activations b of the triangular mesh of the cortex
Figure 2 illustrates this intuition: the Wasserstein barycenter of the three green activations is located right in their middle location
Fig. 2. Illustration of the Wasserstein barycenter x ¯ (middle) of 5 activations inputs x (s) (left) with random amplitudes between 20 and 30 nAm in the middle and occipital lunatus sulcus defined by the aparc.a2009s segmentation
Fig. 3. Example of a simulated source configuration with 5 activations for S = 6 subjects - one activation per label
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