Consciousness: The Secret You (BBC documentary)

http://www.youtube.com/watch?v=9_ZG_ewoOI0&feature=related

What exactly is consciousness and how is it generated?

To what extent can we know we exist, or who we are?

If someone is in a coma, how do we know how to measure consciousness and tell if they are still “alive”, not physically, but consciously? In what ways does recent technology assist us? (this reminds me of one of my favorite novels , Johnny Got His Gun, by Dalton Trumbo)

 

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