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Slowness: An Objective for Spike-Timing–Dependent Plasticity?
Figure 4
Comparison of the Learning Window with Experimental Data
The plot compares the theoretically predicted learning window with experimental data from hippocampal pyramidal cells as published by Bi and Poo [16] (larger plot in the middle). Instead of the ideal power spectrum
with the abrupt cutoff at νmax as stated in Equation 20, a Cauchy function with γ = 1 / 15 ms was used (top left, the dashed line is
for νmax = 1 / (40 ms)). Again, the EPSP decay time was τ = 40 ms. This learning window corresponds to an implementation of the “trace rule” [1,4,6] for a decay time of the exponential filter of 15 ms.
doi: https://doi.org/10.1371/journal.pcbi.0030112.g004