Figure 8.8 Burster Measurements. A. With a long recording, measure the amplitude of the oscillating membrane potential, count the number of spikes per burst, measure the burst duration, and measure the burst period. Burst rate is 1/period; spike rate within a burst is number of spikes/burst duration. A. With a single spike, measure the threshold, AP height, duration at half-height, and depth of afterhyperpolarization.