Phase-locking patterns underlying effective communication in exact firing rate models of neural networks
Fig 6
Effect of a non-identical distractor in the network entrained by the primary stimulus.
(A, B) Two von Mises inputs of different frequency phase-shifted according to the rule described in Methods. The black curve corresponds to the primary stimulus located about μ1 = 0 with κ1 = 2 and period T1 = T. The other curves correspond to a distractor with different coherence values κ2 indicated in the legend. The distractor is phase-shifted (A) T2/2 if T2/T1 < 1 or (B) T1/2, otherwise. (C) Arnold tongue corresponding to 1:1 phase-locking between a single von Mises input with coherence κ1 = 2 (primary input) and the target network. We have selected 3 orbits along the section A1 = A = 0.1 (black crosses) corresponding to T1/T* = 0.845, 0.93 and 1 (left to right), for which we apply a distractor input of the same strength A2 = A = 0.1. (D, E, F) Synchronization index r for the stroboscopic map at time T1 as a function of the coherence of the distractor κ2 (x-axis) for different values of the periods ratio between inputs, T2/T1 (color legend). The distractor frequency can be higher (cold colors) or lower (warm colors) than the primary frequency, being as much twice as fast (dark blue line) or 3/2 times slower (red line).