New insights into the different states of human consciousness and where it occurs in the brain are helping us crack the mystery of what gives rise to

What forms can consciousness take and can we see it in our brains?

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2021-07-11 16:00:09

New insights into the different states of human consciousness and where it occurs in the brain are helping us crack the mystery of what gives rise to felt experience

In essence, consciousness is any kind of subjective experience. Being in pain; smelling onions frying; feeling humiliated; recognising a friend in the crowd; reflecting that you are wiser than you were last year – all of these are examples of conscious experiences. In a field fraught with disagreements, this is something that most, but not all, researchers agree on. Go any deeper, though, and the rifts open up.

The 17th-century French philosopher René Descartes famously divided the universe into “matter stuff”, such as rocks and physical bodies, and “mind stuff”. In the 20th century, philosopher David Chalmers at New York University built on Descartes’s separation, known as “dualism”, and the work of later thinkers, to distinguish between “easy problems of consciousness” and “the hard problem”.

The easy stuff consists of explaining the brain processes associated with consciousness, such as the integration of sensory information, learning, thinking and being awake or asleep. Though we are making steady progress, these problems have yet to be cracked: they are easy only in the sense that the known strategies of cognitive and neuroscientific research should eventually provide full explanations.

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