Stability and Competition in Multi-spike Models of Spike-Timing Dependent Plasticity
Fig 6
Response of a neuron to a pair of presynaptic spikes and its consequences in the suppression model.
A. When the synapse is weak, the probability of a postsynaptic spike does not increase significantly from the baseline. The interval between postsynaptic spikes and also the pairing interval between the second presynaptic and the first postsynaptic spike are likely to be long. The result is a weak depression and also a weak suppression of potentiation. B. When the synapse is strong, the neuron is likely to fire in response to both presynaptic spikes, which results in strong depression and also strong suppression of potentiation.