Before revision:  Higher input commonly result in tonic spiking, which corresponds to a stable limit cycle . Some neurons , however, show an additional intermediate, bistable regime, with coexistence of resting-state fixpoint and limit-cycle spiking .
After revision:  Higher input commonly result in tonic spiking, which corresponds to a stable limit cycle . Some neurons , however, the resting-state fixpoint and limit-cycle spiking .