Figure 1

Calcium imaging of larval olfactory receptor neurons. (a) Schematic of the ex vivo calcium imaging preparation and the larval olfactory circuit. ORN, olfactory receptor neuron; LN, local neuron; PN, projection neuron. (b) Representative fluorescence changes from baseline (∆F/F0) of Or42a ORN in three different animals. 10−3 EA, 10−3 concentration of ethyl acetate. Genotype: w1118;Or42a-Gal4,UAS-GCaMP6f/+.