Artificial Minds; A possible way to test for a soul?

If an artificial brain was created that did not have a developed mind "programmed' inside of it, but instead was constructed in a way that perfectly mimicked the way a real brain responds to physical stimuli, would it, given stimuli, develop into what we call a mind? I guess this is cloning in a sense, create a perfect imitation brain and turn it on attached to a perfect imitation body, does it make a perfect imitation human? Does this human have a soul? But I wonder to what extent the stimuli could be changed and we would still get a human. People are born with vastly different physical interpretations of the world, yet we all still come out as people more or less. Imagine this. A robot is constructed to house a constructed brain that perfectly mimics the average physical properties of all humans. This robot has an almost infinite number of sensors, both outside of it and inside of it, that respond to and react to in a physical way towards the brain, the exact same way as a normal body. A perfect (yet man made) body from the brains perspective. If all the sensors were left on, I imagine a normal human mind would develop. But what happens when we start removing sensors, adding sensors, changing them. Where does our definition of human stop and something else begins?

If humanity is something entirely defined by our brain's and body's physical reactions to the world, what is then the soul and are they present in replications of humanity?

It seems to me like the soul is more a state of being than an actual thing, and to believe in it as an entity is to believe in something with little to no direct fact, in fact has been unprovable for all scientific reasoning, yet simply the belief validates it. Sounds a lot like god to me.

Sorry for the thought pile. Please let me know if you want any clarification