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Correlation-based model of artificially induced plasticity in motor cortex by a bidirectional brain-computer interface

Fig 5

(A) Relative differences (i.e. before versus after spike-triggered stimulation) for mean synaptic strengths as a function of stimulation delay d^† and correlation peak width σ (as in Fig 4D). Subplots show outcome for all combinations of pre- and post-synaptic groups a, b, c, for 2.5 ≤ d^† ≤ 12.5 (ms) and 1 ≤ σ ≤ 50 (ms). Star indicates parameter choice for panel B. (B) Bar plots of mean synaptic strength relative difference for all combinations of pre- and post-synaptic groups, with d^† = 5 ms and σ = 17 ms. Top: normal network (values marked by a star in panel A). Middle: network where b-to-c synapses are inactivated (J_cb ≡ 0). Bottom: network where a-to-c synapses are inactivated (J_ca ≡ 0). Red crosses indicate the artificially inactivated synapses and red arrows show the most drastic change due to inactivation, in comparison to the normal network (top).

doi: https://doi.org/10.1371/journal.pcbi.1005343.g005