Behavior of the cortico-hippocampal network.

<p><b>a</b>) Spiking of networks with parameters <i>h</i> = 100, <i>c</i> = 300 and <i>d</i> between 20 and 120 ms. All other parameters of the model as in Izhikevich (2006). Strong oscillations can be observed with synchronous spiking of all cortical neurons. <b>b</b>) Scatter plots of networks in the 3-dimensional parameter space. Networks represented by black dots show strong oscillatory behavior as depicted in a). Gray dots indicate varied spiking behavior. For essentially all models with <i>h</i>>50, addition of the hippocampus to the network leads to overload causing these oscillations. <b>c</b>) Network behavior across the parameter space after the parameters of no interest have been adjusted as described in the text.