Figure 10: A pictorial representation of the “lesion study” process. The lesion study is based on the idea that it is possible to determine the underlying governing functional principle of the network with rigorously observing the behavior changes in the network for appropriate combinations of the amputations. Based on the complexity of the controller, the lesion study can be performed between neurons in distinct frequency groups, which is performing intergroup amputations, shown in (a), or between the neurons in the same frequency group, that is, intragroup amputations shown in (b).