Figure 10.

Selectively nullifying CabPK-activated g_MI or g_Trans-LTS via dynamic-clamp injection of a negative version of that conductance suppressed an ongoing CabPK–gastric mill rhythm. A, B, Injecting into the LG neuron a negative version of g_MI [I_{dyn,MI (LG)}] (A) or g_Trans-LTS [I_{Trans-LTS (LG)}] (B) reduced the amplitude of the LG neuron subthreshold oscillations and prevented its bursting. During this time, Int1 activity remained pyloric timed, while the IC (mvn: small unit) and VD (mvn: large unit) neuron activity switched from exhibiting gastric mill- and pyloric-timed bursting to exclusively pyloric-timed activity. Black bars, Gastric mill protraction phase-timed IC neuron bursting. Both panels are from the same preparation.