Spectral Analysis of Input Spike Trains by Spike-Timing-Dependent Plasticity
Figure 9
Influence of the PSP response on the kernel and the resulting weight structure for log-STDP.
(A) The neuron is stimulated by input pools. The first two pools have the same reference for correlations with strength
and pool
tends to fire
after pool
. Pool
has no correlation. For all inputs, the firing rate is
. (B) Short PSP response with
and
, as well as purely axonal delays
. (C) Long PSP response with
and
, as well as purely axonal delays
. (D) Short PSP response with
and
, as well as purely dendritic delays
. For each configuration, we present (1) a schematic diagram of the synaptic parameters, (2) the eigenvalues of
and (3) the resulting weight specialization. As in Fig. 5, the purple curves represent the expression in (10). The dotted horizontal line indicates
, the equilibrium weight for log-STDP. Two eigenvalues are roughly equal to zero in D2.