Schematics of reduced models
A, reduced model schematic after removal of both V0 (V0V and V0D) CIN populations from any of the two models. B, reduced model schematic after selective removal of V0V or V2a populations from any of the two models. C and D, reduced model schematic after selective removal of V0D populations from Model 1 (C) or Model 2 (D). CIN, commissural interneuron; -E, extensor; -F, flexor; l-, left; r-, right; RG, rhythm generator.