Carbachol-Induced Reduction in the Activity of Adult Male Zebra Finch RA Projection Neurons

Figure 3

Effects of 30 μM carbachol on the AP firing of RA projection neurons evoked by a depolarizing ramp stimulus. (a) Sample traces of AP firing evoked by a ramp current before, during, and after the application of carbachol. (b) The evoked ramped AP latency was significantly increased in the presence of carbachol (, the latency is determined from the time between the onset of the stimulus and the first evoked AP for each cell). (c) Membrane potential was significantly hyperpolarized in the presence of carbachol (). means , paired test.