For questions about using biological systems as a computing medium. More formal terms for wetware include "artificial organic brain" and "neurocomputer"
Cajal actx inter.jpg A wetware computer is an organic computer (which can also be known as an artificial organic brain or a neurocomputer) composed of organic material such as living neurons.1 Wetware computers composed of neurons are significantly different than conventional computers because they are thought to be capable in a way of "thinking for themselves", because of the dynamic nature of neurons.2 While wetware is still largely conceptual, there has been limited success with construction and prototyping, which has acted as a proof of the concept's realistic application to computing in the future. The most notable examples of prototyping have stemmed from the research completed by biological engineer William Ditto during his time at the Georgia Institute of Technology. His work constructing a simple neurocomputer capable of basic addition from leech neurons in 1999 was a significant discovery for the concept. This research acted as a primary example driving interest in the creation of these artificially constructed, but still organic brains.
Wetware computer - Wikipedia
The prefix "wet" is a reference to the water found in living creatures. Wetware is used to describe the elements equivalent to hardware and software found in a person, especially the central nervous system (CNS) and the human mind. The term wetware finds use both in scholarly publications and speculative fiction.
Wetware - Wikipedia