Octopus nervous system
Octopuses and other cephalopods are well-known for their exceptional intelligence and complex brains, which appear to outstrip all other invertebrates’. But, they work within one strange constraint – like all other mollusks (snails, slugs, oysters and more), the nerve ring at the center of their nervous system encircles the esophagus. In cephalopods, this nerve ring has become enlarged and organized to form their advanced brain, meaning that everything they eat must pass through the brain.
The application underneath is still a work in progress, I am working on the additional nerves, but it already shows the complexity of the brain and nervous system.
Most of the work seen here is based on the work of J. Z. Young “The anatomy of the nervous system of Octopus vulgaris” and where applicable adjusted for Eledone cirrhosa.