Fig. 6

Patterns of calcium oscillations in the 50 GnRH cells of a network with various sensitivity to the synchronization process. Ten different colors have been used; each color is used to represent the activity of 5 individual cells. In a, the ${\mathrm{Ca}}_j$ patterns in all cells are shown for a period of 100 minutes. Only a part of the cells participates in the synchronization episodes at $t\simeq 17$ minutes and $t\simeq 76$ minutes. The three other panels display magnified views of the second synchronization episodes by assembling the ${\mathrm{Ca}}_j$ patterns in cells, which are completely recruited in this event (b), recruited with no significant increase in the peak level (c) or not recruited at all (d)