The primacy model and the structure of olfactory space
Fig 5
Comparing connectivity and affinity data.
A. OR-KC connectivity matrix (FlyEM dataset). B. Left: OR-odorant affinities (from DoORv2 dataset). Gray represents missing values of affinities. Right: OR-odorant primacy matrix for p = 5. C. OR-OR similarities (Pearson correlations) computed from connectivity data for 37 ORs represented in affinity data. D. OR-OR similarities (Pearson) computed from affinity data. The off-diagonal elements of matrices in C and D are correlated (R = 0.185, p < 10−4). E. Schematic showing the overlap matrix computed by matrix multiplication of connectivity and primacy matrices (p = 5). F. The difference in the number of actual overlaps of a given degree and the number of overlaps for a randomly shuffled connectivity matrix [44]. The difference is computed for different primacy numbers. Only the KCs with the highest overlap per odor (gKC) are considered. No statistically significant difference is observed. G. As in (F), but for the 10 topmost KCs per odor. Statistically significant differences are enclosed by a dashed red line (FDR<0.05). H. As in (G), but for the 50 topmost KCs per odor.