Fig. 12:
(a): Number of adaptive refinement steps taken by each subject to achieve convergence for the 7-tissue models under EEG. (b): Average (16 subjects) and maximum (16 subjects) inter-step potential and charge solution vector errors at the end of each adaptive mesh refinement step. (c): Average and maximum GMRES iterations required by each AMR step. (d-f): The same information is presented for the 13-tissue models under EEG.