Is there a field, "neuro architecture" etc? What is the possibility for parallelism vs a human brain? How much smaller can it be than a human brain? How much fa

Is there a field, "neuro architecture" etc? What is the possibility for parallelism vs a human brain? How much smaller can it be than a human brain? How much faster? If it is smaller+faster+more parallel then are they smarter? When can I start programming these things? Are there already ways to play around with these components virtually? WOW WOW WOW WOW