On Sat, 06 Feb 2010 04:25:51 -0500, Sabrina Kilian wrote:

> What I am suspicious about, now, is how fast an MRI can process the data
> it gets and display it. With how the slices are built into a 3D image, I
> am not sure that it could process and display the choice before the test
> subject finishes pushing the button

I was thinking something similar - that the "6 seconds" measured was more 
a recording of the brain chemistry changes and that was compared to the 
timing of the button presses.  The presenter, it seems, might have 
exaggerated the claim about the guy watching the machine knowing 6 
seconds earlier what was being pressed.  It's more likely that it was an 
absolute time comparison that was analyzed after the experiment.

Jim

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