Figure 3From: Modeling of the hypothalamic-pituitary-adrenal axis-mediated interaction between the serotonin regulation pathway and the stress response using a Boolean approximation: a novel study of depressionA simplified model of the regulatory interactions between the serotonin and stress response pathways mediated by the HPA axis. AND/NOT operators are included to show the Boolean logic used. When no operator is shown between the nodes, the activation state is given by any of the nodes upstream. * Nodes located in the dorsal Raphe nucleus (DRN) cells.Back to article page