Final answer:
Being unconscious entails a deep state of unresponsiveness to sensory input, ranging from decreased consciousness to a comatose state, assessed by neurological signs.
Explanation:
Unconscious means not responsive to sensory stimulation and can range from a low level of consciousness to a comatose state where there is profound unconsciousness.
In a coma, the individual is unconscious and cannot respond to stimuli, indicating a deep state of unresponsiveness to sensory input.
Levels of consciousness can be assessed through various neurological signs, such as responses to stimuli and brain activity monitoring.
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