Reference data, optimized parameter sets and properties of the structural plasticity models.

Description of listed values top to bottom: Section 1) Connection properties: Unitary EPSP amplitude per contact as published in the reference, expected number of close appositions from [20] and standard deviation of , figure in which properties of the model with this parameter set are displayed; Section 2) Model parameters: Correlation trace time constant (1), amplitude of correlation trace noise, scale of transition rates (see eq. 7 and Fig. 1c), saturation threshold , intrinsic maturation/shrinkage/pruning rate ; Section 3) Model properties: Sum of squared residuals of the model (see eq. 19), expected numbers of active (), inactive () and total () synaptic contacts and standard deviation of , Pearson correlation coefficient of and , derivatives of expectation of , and with respect to the probability of causal spike pairings () (estimated numerically), expected lifetimes of inactive and active contacts (see eq. 23 and eq. 24), estimate of model time scale to match physiological spine turnover ratio (25), lifetimes in units of days using estimate. Additional, fixed parameters that are common to all models are , and .