Fig 3. Transition from multistability to slow oscillation is caused by somatic adaptation.

Bifurcation diagrams depending on the external input currents $C·{\mu }_{\alpha }^{\text{ext}}$ to both populations α ∈ {E, I} for varying somatic adaptation parameters a and b. The color indicates the maximum rate of the excitatory population. Oscillatory regions have a white contour, bistable regions have a green dashed contour. (a) Bifurcation diagrams of the mean-field model. On the diagonal (bright-colored diagrams), adaptation parameters coincide with (b). (b) Bifurcation diagrams of the corresponding AdEx network, N = 20 × 10³. All parameters are listed in Table 1.