Fig. 1: Overview of systems, perturbations, and models.
From: Modeling brain, symptom, and behavior in the winds of change

a Here we depict the three systems (blue) of brain, symptom, and behavior. Perturbations (rose) including stimulation, pharmacological interventions, life events, and changes in environment can affect each. b We can attempt to understand these systems and their responses to perturbations using computational models (green) of varying complexity.