The Organic Brain System is a brain suspended in a glass bulb filled with a fluid with attachments that allow nerve endings to connect with the brain to perform it's functions. It is used much like a computer that can do functions that range from a simple tasks as opening doors to more complex tasks such as navigation through space.
This type of brain is about and 7” tall and 10” wide suspended in green fluid encased in a glass dome. 3” cable like wires extend from the bottom of the brain to the bottom of the glass where a connection of the glass and the cable meet, from here smaller 2” cable nerves worm themselves along walls to the various things they are connected to. If by chance a nerve is so overwelmed that it may harm the controlling brain, the cable that is connected to the glass will disconnect and fall off to break the connection.
This is a larger brain type about 9” tall and 15” wide and set up in the same way as the simple system is. This brain type is used for larger type of creatures generally for space travel, or for creatures needed for direct control (vehicle type bugs for instance). This type of brain has all the senses any living creature has, but brainwashed to follow the user's commands and slaves itself to the user when they are connected to a Nerve system.