Figure 3.

Four patterns of spontaneous electrical activity in human SP neurons. A, Human SP neurons display four patterns of spontaneous electrical activity (Pattern 1–4). B, All-points histogram reveals the average total amount of time that cells in four groups (Pattern 1–4) spend at a particular membrane potential (Voltage Dwelling). Resting potential is set to 0 mV. Voltage bin = 1 mV. Inset, Percentage of SP neurons belonging to each pattern (P). The total number of neurons in the dataset is 49 from five human subjects, 20–21 gestational weeks.