| pizzahut451 said:
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We can locate areas of brain activity by using magnetic resonance imaging. certain areas become active when people have certain thoughts. An example of this can give is the way we can communicate with people in a vegetative state. We can tell a person to think of playing tennis or navigate their house. We can detect their thoughts and interpret them as yes and no becasuse the two different tasks light up different parts of the brain when using an MRI machine. If they think of tennis it would be a yes, or if it is the navigation task we read that as no. I see that as pretty convincing physical evidence for human thought.
Heres an example: http://brainimaging.waisman.wisc.edu/~perlman/papers/Vegetative/Detecting-Awareness-in-the-Vegetative-State.pdf
