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. 2018 Aug 27;126:1–18. doi: 10.1016/j.tpb.2018.08.002

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Fig. 3 — The evolution of $S_{b}, S_{n}, I_{b}$ and $I_{m}$ where (a) $μ = 1, T_{L} = ln (1 ∕ ε) ∕ (β s_{0} - 1)$ and (b) $μ = 1 0^{- 4}, T_{L} = ln (1 ∕ ε μ) ∕ (β - 1)$ with $β = 4$ , $μ = 1$ , $s_{0} = 0.8$ and $ε = 1 0^{- 4}$ . Note that for case (b) $I_{b}$ is negligibly small throughout the entire time.