How can scientists tell how much of our brain we use?

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Cherene

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Cherene asked the Naked Scientists:
   Hi Chris 
The brain is without a doubt an extraordinary organ, I would like to know how
scientists establish how much of our brain we really use, some say we only use 10% of our brain but how could one know that for sure ?

Regards Cherene 






What do you think?
« Last Edit: 27/11/2011 18:30:02 by _system »

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Offline Phil1907

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How can scientists tell how much of our brain we use?
« Reply #1 on: 27/11/2011 17:18:55 »
Think the 10% use concept is a myth.

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Offline RD

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Offline jacksonema

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How can scientists tell how much of our brain we use?
« Reply #3 on: 28/11/2011 04:49:41 »
This is very interesting topic. I got really
good information after going through it. Thanks
for explaining about  topic.

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Offline CliffordK

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How can scientists tell how much of our brain we use?
« Reply #4 on: 01/12/2011 03:25:06 »
Those people using greater than 50% of their brain are probably in the middle of an epileptic seizure!!!

The concept is pretty simple.  Use a PET scan or FMRI and judge which sections of the brain are showing activity greater than baseline, and which sections of the brain are showing activity at or below baseline, and then calculate a percent active.

Of course, that means assuming that the areas at baseline are actually "inactive" which may not truly be the case.

However, the answer is pretty meaningless.

Another way of looking at it is to consider the deficits after traumatic brain injuries and strokes.  In some cases, people can recover from very large damaged areas.  In other cases, damage to some very small critical areas can lead to some extraordinary deficits.

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Offline Supercryptid

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How can scientists tell how much of our brain we use?
« Reply #5 on: 01/12/2011 04:04:46 »
The brain is an energy-hungry organ. If any part of it was there absorbing calories without providing any benefit in terms of survival, then evolution would have gotten rid of those parts in time.
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