Sodium current properties in neonatal and adult SDH neurons. A. Representative sodium current illustrating origin of measurements shown in bar plots. All measurements were made on the largest current observed in response to the activation protocol shown in Figure 1A. B-D. Bar plots comparing current density (B), decay time (C) and time to peak (D) for neonates and adults. Current density was greater and decay time was faster in adults (* p < 0.05). Time to peak was similar for both age groups.