Figure S5. a) Modelled weight update behavior with different degrees of non-linearities (assuming the degrees of non-linearity in the potentiation and depression are the same). b) Test accuracy as a function of the training epoch for different degrees of symmetric nonlinearities of the weigh updates. c) Modelled weight update behavior with different degrees of non-linearities (assuming the degree of non-linearity in depression is constant, i.e., asymmetric weigh updates). d) Test accuracy as a function of the training epoch for different degrees of asymmetric nonlinearities of the weigh updates.