well the hard problem of consciousness gets in the way of that
- I assume you as a materialist you mean our brain carries consciousness as a field of experience arising out of neural activity (ie neurons firing, some kind of infromation processing leading to models of reality simulated in our mind leading to ourselves feeling aware) ie that we our awareness is the 'software' running inside the wetware.
That's all well and good except that none of that explains the 'feeling of it' there is nothing in that 3rd person material activity that correlates with first person feeling. The two things, (reductionist physical processes cannot substitute for the feeling you and I have as we experience)
This hard problem is difficult to surmount physically -either you say its an illusion but how can the primary thing we are, we expereince as the self be an illusion? or you say that somewhere in fields, atoms, molecules, cells, in 'stuff; is the redness of red or the taste of chocolate..