FIGURE 3. Correlation scatterplots with overlay of different normalization lines. Plots are shown from 3 representative patients, patients 1 (A), 4 (B), and 2 (C). Each voxel within reference volume is represented by a point whose coordinates are equal to interictal and ictal counts. These counts have been scaled to maximum interictal and ictal counts, respectively. Diagonal dashed line is normalization line obtained by method Max. All other lines through origin are normalization lines obtained by 1-parameter methods; the 2 lines deviating from origin are normalization lines obtained by 2-parameter methods.
