Realistic to stay in the industry and study neuroscience at the same time?
Speaking only for the US, there are graduate programs that have courses primarily in the evenings to accommodate working people. But most people may not want to take a full course load of, say, four courses with the associated work. These programs are probably concentrated in large cities, I guess. 

And it is doctoral programs that are more likely to be research focused than another MS. And evening only doctoral programs are more rare, I would suppose. 

But, do you really want two full-time jobs? Both your work and schooling will require a heavy commitment. Does 80 or so hours a week work for you. Do you have other commitments on time and focus (family, etc). 

Whether your current MS program in CS is more or less intense than studying neuroscience, I can't say. But go in with full knowledge. 

So, possible, yes. But a very hard road for a couple of years at least. 

An alternative might be a program (probably rare in the US) that is entirely research based and doesn't require much coursework. If you have a project that doesn't require your physical presence during the day it might work out. But still, 80 or so hours.