Fig. 3.

Medial view of the brain. a The original model. b The final model. c The original model transparent. d The final model transparent. The final model includes the small region created to represent the position of the caudate head (solid black arrow), an indented area representing the thalamus (dotted white arrow), and a portion of the surface removed representing the position of the septum pellucidum, a hole through which the inside of the model can be seen (outlined with a black line)