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Burst firing creates an attractor in synaptic weight dynamics

Fig 5

Conceptual illustration of the burst-induced attractor and its modulation.

A. Example trajectories in synaptic weight space during transitions between tonic (light blue) and burst firing (dark blue). Tonic firing leads to more dispersed convergence points , whereas burst firing drives weights toward a narrower attractor region . B. Neuromodulation shifts the location of the burst-induced attractor; either by modulating the collective burst firing (pink, referring to Fig 3), or by modulating the plasticity parameters in a weight-dependent manner mimicking synaptic tag (referring to Fig 4). Up-neuromodulation moves the attractor toward higher weights (orange), while down-neuromodulation shifts it toward lower weights (yellow).

doi: https://doi.org/10.1371/journal.pcbi.1014001.g005