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. Author manuscript; available in PMC: 2010 Apr 6.
Published in final edited form as: J Neurogenet. 2009;23(4):366–377. doi: 10.3109/01677060903085722

Figure 3.

Figure 3

Serotonin lowers the response threshold of PNs. (A) PN responses to stimulation of the antennal nerve measured across the entire AL are enhanced at all stimulus intensities by 5HT at 10–4 M (n=9; *P <0.05; **P <0.005). (B) Serotonin application results in subthreshold stimuli to evoke responses. Average time course of responses to the lowest intensity stimulation (1 spike), as measured across the entire AL before (hatched line) and after (solid line) 5HT application. Stimulus onset at time 2 seconds, as indicated by black bar. Data in A are represented as mean±SEM.