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. 2015 May 12;6:148. doi: 10.3389/fphys.2015.00148

Figure 1.

Figure 1

Agrotis ipsilon Phe-ORNs respond to heptanal. (A) Typical examples of the responses of Phe-ORNs to the pheromone (Phe) and three doses of heptanal (Hep). Scale: vertical bar = 1 mV; horizontal bar = 1 s. The vertical gray bars indicate the stimulus (200 ms). (B) Dose-response curves of Phe-ORNs to a 200 ms puff of the pheromone or of Phe-ORNs and VPC-ORNs to heptanal. Mean of the maximum firing rates during the 1st second from stimulus start (± SEM). Doses of heptanal are in v/V % of dilution in mineral oil with their equivalance in mg (lower horizontal axis); doses of pheromone are in ng deposited on filter paper (upper horizontal axis). Phe-ORNs responded already to the lowest pheromone dose tested and the maximum firing rate increased with increasing doses (solid red line, n = 16). Phe-ORNs started to respond to heptanal at a dose of 1% (solid green curve, n = 12) while VPC-ORNs responded already at a dose of 0.1% (dashed green curve, n = 14). Controls (black dot) refer to pooled data of stimulation with pure hexane and pure mineral oil.