Results for phantom bursting with gs2 as the varying parameter and gs1 = 8.5 pS. (A) Burst period decreases with gs2. For gs2 < 19 pS, the system spikes continuously. (B) C values for active and silent phases and for s1 and s2. (C) For low values of gs2, DFAP is close to −1 and DFSP is close to 1 indicating that s2 drives the active phase, while s1 drives the silent phase. However, for high values of gs2 DFAP is close to 1 and DFSP is close to −1 indicating that s1 drives the AP, while s2 drives the SP.