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This conception of consciousness is utilized in formal model building, such as [[Integrated Information Theory]]. There are at least two different conceptions thereof.

The first conception is a further development of the [[consciousness#wakefulness|wakefulness]] conception of conscious experience. Whereas the latter is a predicate, i.e. a function symbol which takes values <math>0</math> or <math>1</math>, depending on whether an individual being is conscious in this sense or not, the level of consciousness conception of consciousness attempts to introduce more fine-grained distinctions. It describes various different states of consciousness (of an individual being as a whole), including coma, sleep, drowsiness and full wakefulness, among many others.