Simulation results of the synaptic weight change induced by a 1 second train of spikes with different degrees of correlation as a function of the frequency ⁠. The fraction p of correlated spikes takes the values 0, ⁠, and 1 in these plots. The delay between pre- and postsynaptic spikes was taken to be in these simulations. The case corresponds to the dashed lines in Figures 8 and 9. (a) The pairwise hippocampal parameters, equation 3.1, were used, together with ⁠, ⁠, and ⁠, corresponding to the triplet fit. (b) Here the pairwise cortical parameters, equation 4.1, were used, together with ⁠, ⁠, and ⁠, corresponding to the triplet fit.