Synaptic reshaping of plastic neuronal networks by periodic multichannel stimulation with single-pulse and burst stimuli
Fig 14
Schematics of the derivation of the estimated mean rate of weight change.
During PMCS, the postsynaptic neuron and the presynaptic neuron (left) received stimuli at frequency f. Stimulus deliveries (red arrows) were phase shifted by a phase lag ϕ ∈ [0, 1]. Each stimulus could trigger several spikes (vertical bars). Presynaptic spikes traveled along the axon and arrived with a time delay ta at the synapse (blue). Backpropagating postsynaptic spikes traveled along the dendrites and arrived with a delay time td at the synapse. Interspike intervals ϵ are marked by horizontal arrows. Indices count interspike intervals during respective PMCS cycles. Dashes refer to interspike intervals from the previous PMCS cycle. Suffixes ‘post’ and ‘pre’ indicate interspike intervals of the postsynaptic or presynaptic neurons, respectively.