Evidence
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This two-dimensional framework has been used to classify disorders of consciousness, in which wakefulness and awareness can dissociate: patients in a vegetative state show wakefulness without awareness, whereas patients in a minimally conscious state retain intermittent but limited awareness.
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The Morphospace of Consciousness ↗
This clinical definition of consciousness enables a practical classification of closely associated states/disorders of consciousness into clusters on a bivariate scale with awareness and wakefulness on orthogonal axes. Under healthy conditions, these two levels are almost linearly correlated, as in…
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This clinical definition of consciousness enables a practical classification of closely associated states/disorders of consciousness into clusters on a bivariate scale with awareness and wakefulness on orthogonal axes. Under healthy conditions, these two levels are almost linearly correlated, as in conscious wakefulness (high arousal and high awareness) or in deep sleep (low arousal and low awareness). In pathological states, wakefulness without awareness can be observed in the vegetative state [ 1 ] , while transiently reduced awareness is observed following seizures [ 18 ] . Patients in the minimally conscious state show intermittent and limited non-reflexive and purposeful behavior [ 19 ] , [ 20 ] , whereas patients with hemispatial neglect display reduced awareness of stimuli contralateral to the side where brain damage has occurred [ 21 ] .