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. 2012 Mar 12;7(3):e33159. doi: 10.1371/journal.pone.0033159

Figure 5. Responses of AL PNs within the MGC of virgin and mated males.

Figure 5

A) Typical responses of a pheromone-sensitive PN in a virgin male, showing an excitatory response to pheromone (1 ng), no response to heptanal (100 µg) and the solvent (hexane), and a reduced firing rate during excitation to the pheromone/heptanal mixture. The grey bar indicates the duration of the stimulus (0.2 s). B) Spike frequency of PNs during the excitatory period to the pheromone (1 ng in virgin and 10 ng in mated males), heptanal (100 µg) and the pheromone/heptanal mixture in virgin (n = 17 neurons) and mated (n = 15 neurons) males. Spike frequencies of PNs do not differ between heptanal and solvent. Hep: heptanal; mix: pheromone/heptanal mixture; phe: pheromone; sol: solvent.