He had slipped into a coma, but regained consciousness on Tuesday.

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After more than three weeks in a coma, Chance Bothe regained consciousness but initially recognized neither of his parents, Bothe said.

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The case has highlighted the difficulties doctors face when trying to diagnose the level of consciousness of a patient in a coma-like state.

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The brain with these regions lighting up most comes from a 73-year-old former guard with dementia and depression who suffered 20 concussions with short losses of consciousness, but one with a 12-hour coma.

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Wasendorf Sr. has been in a coma ever since, though rumors persisted yesterday that he had regained consciousness (no official word on his medical condition has been released).

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