Fig. 1.
Commisural interneuron (CIN) action potential (AP) properties change during postnatal development. A: representative traces of APs from postnatal day 2 (P2; light gray), P8 (dark gray), and P14 (black) CINs. B: average measurements of AP halfwidth, threshold, and afterhyperpolarization (AHP) minimum for P0–3, P8–10, and P14–16 CINs. *P < 0.05. C: expanded view of the AHP of 2 different P14–16 CINs demonstrating a fast and slow AHP.