Figure 7: Illustration of the results of the simulations of the network with an external feedback loop schematically illustrated in Fig. 2. The 4 selected neurons have inputs from the feedback loop with a delay of 800 ms. The bursting activity is initiated by applying 50 ms external current ( $I_{ext}=0.01 mA$) to all neurons. Afterwards the network is generating bursts periodically with interburst interval determined by delay in the feedback loop.