Per this comment above:
"Scans of the brain show activity in all areas at all times. If we used only a portion of our brain, chances would be brain injuries would be much less traumatic.
The fact is, many physical injuries to the brain result in no change at all, where some result in massive cognitive problems.
"The only area that the 10% may be arguable is in memory capacity. No one that I know of has ever done a study on a brain's memory capacity."
That is extremely easy to test if you are speaking of short term memory.
Memorize this number:
128
Turn away from the screen a repeat it.
Now this one:
436798
Okay, how about this one:
857937597389038473683
There is most definitely a limit to this kind of memory. Notably, some savants can memorize
that long one, and even more.
But in regards to overall capacity of the brain, here's one online comment to consider:
http://www.scientificamerican.com/article.cfm?id=what-is-the-memory-capacityOtherwise, in regards to brain potential, I've written a good deal on this subject which you can read from my site:
**REMOVED**I, for one, have never argued that we use 10% of our brain- or ANY percentage for that matter.
It's not the right way to view brain potential. You cannot even state in percentage how much of your brain one is capable of using. It's a meaningless question.
MRI and PET scans only show that the brain IS engaged. Clearly, the AMOUNT that the brain is engaged wildly varies, this is inarguable, and precisely why these brain scans are useful-- exactly because they show MORE or LESS brain function between areas, and more or less function in the same area depending on other factors.
A good analogy would be comparing brain use to engine use in a car-- when you drive, all cylinders are firing (in a good engine). But it is not uncommon for spark plug wires to become disengaged, for there to be problems in the fuel system or other mechanisms that decrease the power generated by the motor. Further, you can drive a car at 2 mph, while it is capable of going 100 mph- obviously, one does not use the full potential of a car most of the time, and usually, just a mere fragment of the engines potential.
The brain certainly does NOT use the same amount of energy all of the time-- if it did, a PET scan would not even work at all, because PET scans register differing amounts of glucose metabolism across the neural network inside the brain.
Neil
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