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Biophysically grounded mean-field models of neural populations under electrical stimulation

Fig 3

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

Bifurcation diagrams depending on the external input currents 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.

doi: https://doi.org/10.1371/journal.pcbi.1007822.g003