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Brain functional network reorganization. Healthy subjects have a strong functional connectivity network between occipital and frontal regions of the brain. But in patients with visual field defects this network is lost. When treated for 10 days with alternating current stimulation, this network is partially restored (Bola et al., 2014). Lower panel: As the brain functional connectivity recovers, so does the visual field (shown here with supra-threshold campimetry) (Sabel, 2016).
