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Comment Re:60 cups (Score 1) 628

Replace cups of coffee with double espresso. That would give you ~3L of espresso (double shot is about 50ml). If one cup == a single espresso then it's ~1.5L.

It's a hell of a lot. Wikipedia says 100mg caffeine per espresso, so that's 6g of caffeine.

From wiki page on caffeine LD50 is somewhere in the region of 150-250mg per kilo, but with "serious symptoms of overdose requiring hospitalization occurring from as little as 2 grams of caffeine".

Comment Re:Interesting! (Score 1) 161

Unfortunately, this 3D MRI can not be applied to imaging the human brain yet

Or at all, since this is based on measuring the vibrations of a cantilever. This is a microscope, not a brain scanner.

fMRI which measure changes in metabolism (glucose metabolism to be exact)

Not quite, it measures the BOLD signal, but the actual causes for this are extremely complex and not fully understood.

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