Metrics to compare temporal components. Mean value of the Pearson’s correlation coefficient adopted to compare intra-group (r
) and inter-groups (r
) similarity between homologous temporal components for each of the 8 directions. Labels on the plots are: N, North; NE, North-East; E, East; SE, South-East; S, South; SW, South-West; W, West; NW, North-West. Labels on the horizontal axis are: 0 w, pre treatment; 2 w, 2 weeks; 4 w, 4 weeks; 6 w, post treatment.