Problem: Another popular way of explaining mind-body relationships is through emergentism, which claims that mental states emerge from physical brain states. A common analogy is how the unique qualities of water (its wetness, its boiling point, its density, etc.) emerge when hydrogen and oxygen combine-elements without those qualities. The emergent properties of water then are analogous to mind, as something that arises from the right sort of physical substrate (brain). One kind of emergentism claims that once mental events emerge from brain activity, the mental events can influence subsequent brain activity and thus behavior. Because of the postulated reciprocal influence between brain activity (body) and mental events (mind), this kind of emergentism represents interactionism. Nobel-prize winner Roger Sperry (1993), for example, advocated this kind of emergentism. Need Assignment Help?