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Self-awareness, or consciousness, has proved resistant to explanation by philosophy, neuroscience or psychology. Related problems are the nature of 'qualia', reported sensations of colour, say, or the taste of wine.

Some aver that it is a fictive entity, or the result of muddled thinking; others that it will remain inexplicable.

This book tries a novel approach by suggesting that specific changes between brain states induce feelings of altered self-awareness.

It explores this theme with reference to the arts and sciences.