In philosophy of mind, cartesian materialism, a term coined by Daniel Dennett, views consciousness as tied to one or more specific brain areas that capture our subjective experience. Despite its name, this idea was not held by René Descartes, who instead advocated substance dualism—the separation of mind and body as distinct entities.
In its simplest form, Cartesian materialism suggests there is a dedicated "place" in the brain, called as the Cartesian theater by Dennett, where a unified representation of everything we consciously perceive—sights, sounds, smells, and more—exists at any given moment. According to this view, a hypothetical observer could locate the contents of consciousness in this privileged neural space, while anything outside it remains unconscious.