Abstract:Based on the firing patterns of the nonidentical coupled HindmarshRose neuronal system without timedelay,we numerically studied the effect of timedelay on the bursting patterns when the coupled HindmarshRose neurons obtained almost complete synchronization.The results show that the timedelay makes the firing pattern change, compared with the case without timedelay,and makes the spikes within per busting gradually decrease or almost disappear with the values of delay increasing.The results will help us better understand the important effect of timedelay on the behavior of the coupled neural systems.