Figure 8.

Stability of feed-forward structure after removing local excitation. Comparing the evolution of the network structure in the presence of local excitation t < 20 s and after removing it (t > 20 s). (A) After the local excitation is removed, the synaptic weights remain at their stationary values, although STDP is still active in the network. Furthermore, as shown at selected timepoints [red dots in (A)], (B) the bimodal distribution of synaptic weights, and (C) the feedforward structure remains stable after removing the local excitation.