2008 Consciousness

2008 Consciousness - Criteria for consciousness Lionel...

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Criteria for consciousness Lionel Naccache- Paris • Ability to report to ourselves or to others the content of an event or representation • Ability to sustain a representation (e.g., thinking about an event) over time. • Ability to distribute information from the initial sites of brain activation to many sites within the brain.
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Examples of apparently comatose individuals exhibiting evidence of conscious behavior Head injury patients who appear comatose or in a vegetative state can respond to sounds or visual stimuli as measured using fMRI. Some of these patients can carry out mental imagination tasks, e.g., imagining playing tennis upon request. Responses (fMRI) are similar to what fully functioning people display. Are these people conscious but in a “locked-in” state? Should not be over interpreted since even fully conscious individuals carry out organized behavior at subconscious level, e.g., driving.
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fMRI evidence for processing by the vegetative brain
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Different states of unconsciousness
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2008 Consciousness - Criteria for consciousness Lionel...

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