Skip to main content


Fig. 4 | Biology Direct

Fig. 4

From: Onset, timing, and exposure therapy of stress disorders: mechanistic insight from a mathematical model of oscillating neuroendocrine dynamics

Fig. 4

Classification of variables. Variables of the full five-dimensional model are grouped according to their dynamical behavior. c s(τ) is a slow variable, while x(t)=(c,a,o,r) are fast variables. Of these, (a,o,r) form the typically oscillatory PA-subsystem that is recapitulated by c. In the ε=1/t c1 limit, the variable c s(τ) slowly relaxes towards a period-averaged value 〈c (o(c))〉. Therefore, the full model can be accurately described by its projection onto the 2D (c s,c) phase space

Back to article page