Fig 4 - Self-organization of biological morphogenesis: General approaches and topo-geometrical models
7 Model of a stress hyper-restoration (HR). a A response to externally applied tension. b Same for tension's relaxation/pressure. In both frames, external perturbations are displayed by blue dashed lines, active responses by red solid lines, and lag periods by black dashed lines. Horizontal axes stress, vertical axes time. c Interpretation of HR response in terms of Van der Pol equations phase portrait. For explications, see text