Delayed feedback stimulation effect in the model network.

<p>A) Desynchronization of strongly synchronous STN neurons with delayed feedback stimulation. B) Feedback stimulation leads to increased synchrony in the model network in the physiological intermittent regime. Half of model STN neurons are affected by stimulation. Electrodes are placed near the 5^th and 7^th STN neurons in the array and their membrane potentials (in mV) are shown in the top and bottom time traces in A) and B). Middle boxes contain voltage for the 5^th (red curve) and 7^th (blue curve) STN neurons together filtered to the beta-band. Stimulation is switched on at 2000 ms (indicated by vertical dashed line). Parameters are: <i>w</i>₁ = 0.3, <i>w</i>₂ = 0, τ_s = 50 ms, τ = 50 ms, <i>C</i>₁ = 0.04, <i>I</i>_app = 5, A) <i>g</i>_syn = 1.3, <i>K</i>_f = 45. B) <i>g</i>_syn = 0.9, <i>K</i>_f = 35. The mean period of the model network without stimulation is <i>T</i> ≈ 100 ms.