Stability and Competition in Multi-spike Models of Spike-Timing Dependent Plasticity
Fig 7
A. Schematic illustration of spike interactions in the NMDAR-based model. The presynaptic spike up-regulates frest, activates Mdn and depresses the synapse. The postsynaptic spike down-regulates frest, activates Mup and potentiates the synapse. B. Plasticity in the NMDAR-based model due to triplets of spikes with parameters as in Table 2. The effect is asymmetric, with pre-post-pre triplets inducing potentiation (top left) and post-pre-post depression (bottom right).