Abstract

Mental states that are inherently conscious are said to be “phenomenally conscious” by philosophers. If phenomenal consciousness is a natural phenomenon, a part of the physical world, we can reasonably suppose that there should be a mechanism which provides an explanatory link between the subjective and the objective. Philosophical zombies pose a serious threat to any sort of physicalist view of phenomenal consciousness. They are microphysical duplicates that lack phenomenal consciousness. The problem of the inverted spectrum is sometimes presented with respect to a single individual who adapts to an operation through time and eventually forgets that things ever looked any different to him. Not all philosophers accept that experiences are transparent. There is no one problem of unity for experiences, and there is no one kind of unity either. Split‐brain subjects, divided consciousness, and the problem of animal consciousness are also discussed.