Fig. 2.

Time of day does not affect GnRH neuron firing pattern in OVX mice. (A and B) Representative examples of firing patterns are shown for GnRH neurons from OVX mice recorded in the a.m. (A) and in the p.m. (B). Firing rate is displayed at 1-min intervals. Vertical lines at the top of each graph illustrate the timing of the individual action currents detected. (C–F) Mean values for firing rate (C), median instantaneous frequency (D), maximum duration of quiescence (E), and percentage of time in quiescence (F). Gray bars represent values from cells recorded in the a.m., and hatched bars indicate values from cells recorded in the p.m.