Figure 2.

Odour representations in the AL: Glomerular response maps are displayed in principal components (PCs). The trajectories represent 25 odorant stimulus repetitions (marked by numbers along the trajectories) in control (a) and treated (b) bees. Imidacloprid was administered on average between trials 4.6 and 6.6 to the treated group (b), while, in the same time window, the control group (a) was administered Ringer’s solution; (n = 5 bees per group; ACP: acetophenone, shown in blue, BZA: benzaldehyde, in cyan, 1-HEX: 1-hexanol, in yellow, and 1-OCT: 1-octanol, in red). PCs and axes are identical for (a) and (b), allowing the comparison of odour distinguishability (reproduced from [61] CC BY 4.0).