Fatigue timescales' separation.

<p>For panels (a–b) = 1.6 s, while for panels (c–d) = 1.2 s. In all cases, = 0.8 s, = 1.6 s, and W₀ = 8.6 (a) Mean population firing rate as a function of time. (b) Adaptation leak conductance g_a (population-averaged) as a function of time. Inside a BNS, it tends to accumulate across successive NSs, until it is high enough to prevent subsequent NSs. Thus BNS termination is almost deterministic, while BNS initiation is stochastic. (c) Mean population firing rate as a function of time. (d) Adaptation leak conductance g_a (population-averaged) as a function of time. It cannot accumulate across successive NSs. Thus both BNS initiation and termination are stochastic. This can lead to hundreds of ms long BNSs, which is not realistic.