From Occasional Choices to Inevitable Musts: A Computational Model of Nicotine Addiction
Figure 6
Change in parameters in each state of the system. (a) Addiction does not develop. After the learning ends, values shift to , namely which is the code of nonsmoking action in our simulation. (b) At the end of the simulation period, values are shifted to . No particular behavior is adopted. (c) When learning ends and addiction develops, values shift to , which represents the code for smoking action in the simulation. (d) Bifurcation diagram of the action selection system (already given in Figure 4) (the branch colors are green, stable branch of nonaddictive behavior; blue, unstable branch corresponding to exploration; red, stable branch of addiction).
