First i like to put the mind and body in three categories
1] The physical brain and body
2] The mind [mental] information
3] Consciousness[subjective] immaterial soul
Some materialists believe that consciousness is an emergent property of the brain. The problem with this is, consciousness is subjective it is the only thing we know that is "subjective". All emergent things are physical, in nature where consciousness is nonphysical. The only way we can solve the mind body problem is to take both the objective evidence we have and the subjective evidence as well.