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. 2016 Jan 20;9:189. doi: 10.3389/fnsys.2015.00189

Figure 4.

Figure 4

ECoG recording from epilepsy patient. (A) Placement of electrode arrays. (B) Granger causality spectra using bipolar data. (C) Granger causality spectra using unipolar data. (D,E) Schematic summarizing the Granger causality results where the thickness of the arrows is proportional to the corresponding Granger causality values.