From the original Hartmann Music web site: "The Neuron VS comes with the same sound engine as the Hartmann Music keyboard. In tandem with the NUKE hardware controller, Hartmann puts a resynthesis system in the hands of the musician that offers exactly the same sonic features as the Neuron keyboard synthesizer".
This a Mac Intel VST 2.1 compatible version of the original NeuronVS software. It's a free part time project created after the death of the Hartmann Music company by the maker of the Neuron synthesis technology Stephan Bernsee. It is provided on an AS IS basis with no warranties of any kind.
This VST instrument requires a VST 2.1 compatible host and Mac OS X 10.6.8 or better. For a complete description please see the manual that is provided on the project page.