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Time series of oscillators 1 and 2 (equations (4.1) and (4.3) with ϵ=8, α=100, τ1=τ2=1), in a 2 : 3 mode-locked state. The common time frame ‘T’ is marked with grey and white bands. Note that oscillators x1 (top graph) fires two spikes for every tree spikes of oscillator x2 (bottom graph) so that oscillator x1 has a two-cycle attractor while oscillator x2 has a three-cycle attractor.
