BIO-ARTIFICIAL INTELLIGENCE. “Maze traversal in Physarum can be modeled as a simple decision tree, optimized by ant algorithmics. This provides a simple explanation for apparently anomalous information processing by a single-celled organism. The mechanism can be viewed as a biological implementation of straightforward artificial intelligence techniques.”
https://ukacc.group.shef.ac.uk/proceedings/control2008/papers/p246.pdf