Before revision:  The transition from desynchronous spikes to synchronous bursts activities, induced by varying the synaptic coupling, emerges in a hysteretic loop due to a bistable regime where normal ( synchronous ) or abnormal ( desynchronous ) regimes exist.
After revision:  The transition from desynchronous spikes to synchronous bursts activities, induced by varying the synaptic coupling, emerges in a hysteretic loop due to a bistable regime where normal ( desynchronous ) or abnormal ( desynchronous ) regimes exist.