SPIKE AND BURSTING Bursts as a unit of neuronal information relative refractory period regular spiking(RS)neocortical neuron K increasing ISIs 100ms 飞 bursts( doublets) intrinsically bursting(B)neocortical neuron 60 500pA inter-spike intervals(ms) decreasing ISIs 100ms interburst perod (intraburst) descent active period 600pA phase V(OSPIKE AND BURSTING Bursts as a Unit of Neuronal Information