Brian's Brain is a busy cellular automata rule, with perhaps too much activity. A variation in which dead cells
with three live neighbors become refractory instead of staying dead is far less
busy. The following rule variations are available:
Brain Variation 1 - Brain Variation, dead with 3 neighbors become refractory.
Brain Variation 2 to 14 - Intermediary rules.
Brain Variation 15 - Brian's Brain.
This lab allows experimentation with mixtures of the above rules, where the mixtures are constructed by
applying the first rule a number of times followed by applying the second rule a number of times.