Fig. 1.

Dynamics of the feedback loop with antisymmetric coupling. (a) Fluctuations of transmission delay τ₁.(b) Evolution of phase lag between u(t) and v(t) for the continuous case (filled circles) and the discrete approximation (open triangles). Compare Eqs. 1, 2 and 3, 4, respectively. (c) The phase lag is defined as the time difference between subsequent passages of variables u (dashed curve) and v (solid curve) across the value ½ from below, as indicated by the black double arrows. Parameters in Eqs. 1 and 2 have values τ₂ = 0.5, α₁ = α₂ = β₁ = β₂ = 10, k₁ = k₂ = 10^1/2, h = 2. Broad variations of these parameters give qualitatively the same results.