Fig. 2.

Effects of developmental nicotine exposure (DNE) on phasic inspiratory modulated XII MN inward currents. A and B show superimposed XII MN inspiratory drive currents from every cell studied in both control and DNE treatments, respectively. The frequency (C), amplitude (D), and charge transfer (E) of these currents were similar between treatment groups. In contrast, the duration of the inspiratory current was significantly shorter in DNE animals (F). Holding potential was −70 mV in all cells.