well, free will is obviously a constuct of consciousness..

you contend that consciousness originates from a nonmaterialistic source. this is inconsistant with your theory that physics negates free will. of course free will isn't free, we are bound by these laws of physics. so therefore, consciousness is also bound by these laws, since they originate from neurological processes, which you've already acknowledged.

but your logic is inconsistent...

how can consciousness originate from an immaterial source, if we are actively aware of it in a waking state? there are means of testing this, and thought-->action responses. correlations can be physically shown which connect decision with action, of course, this is based in the physical realm, our best model to show that consciousness has a biological source.