Fig. 4

Relationship between cortical distance and pulvino-cortical coupling. (left) Half matrices showing pairwise cortical distances and overlap in pulvino-cortical functional connectivity for all 39 cortical areas. Area labels are colored based on clustering in Fig. 2. Thin vertical black lines separate each block of four areas. (right) Scatter plot of cortical distance vs. overlap of pulvino-cortical connectivity for area pairs that were both part of the ventral pulvinar cluster (blue), dorsal pulvinar cluster (red), or for area pairs between clusters (grey). The correlation between cortical distance and pulvino-cortical connectivity overlap was significant for areas within the occipital-temporal cluster (r = −0.63, p < 0.0001), but not within the frontal-parietal (r = −0.10, p > 0.10). For all area pairs, Dice’s coefficient, 2 |A ∩ B| / (|A| + |B|), was calculated