Is it true we don't use 90% of our brain?, why?
78919
That's a load of BS with absolutely no foundation whatsoever.  Snopes to the rescue:
588739
Brains don't have a limited amount of storage space like a computer does.  Learning involves making new connections between neurons, and ideas.  It is estimated that only 10% of our brains are used.  You have plenty of brain space left.\n\nAs for the removal of data... it's probably not "removed" it's just stored somewhere where you can't find it...
262318
No, ROFL.  Life is all in your brain, everything you are is in your brain.\n\nQuestions?  Comments?  Concerns?  Email me through me profile.  :)
1170084
Yeah, hes saying we don't know half as much as we think we do. or in his case a millionth of 1%. Even if we are generally smarter then average, there is still so much that person doesn't know. Every person knows a lot about hteir lives, and other people around the globe know about their neck of the woods and so on. The limit to knowledge in the world is inmeasurable. I think I made that word up....but it sounds good.
777281
Yes and no. When we are first born, the human brain is the biggest part of the body. We literally have personalities the second we get out of the womb. Technically, we only use about 5 percent of our total brain capacity, so we know where we are, but what is keeping us here is what is known as stimulus overload, where we have soaked so much up that we cant get any more. (That is why cramming for a test/ exam is bad for you) The other thing is that the blood cells can only transport so much O2 (oxygen), so if we could increase O2 absorption efficency, then we could open up more possibilities. Assuming of course we can overcome stimulus overload. And yes, for the first few years we are growing connections to neurons exponentially. But when we get to about 20, they stop growing and start going the other way. So if we can increase O2 absorption, maintain connections, and overcome stimulus overload, then we can start unlocking our mind. Further more, it has been postulated that the human mind can store about 200 terabytes of info! (1 terabyte equals one thousand gigabytes)
374973
You use 100% of your brain but only about 10% at any given time. If you used 100% at any given time you would have a seizure because your brain cannot cope with so many neurons being fired all at once.
257663
A) It´s false!  The capacity of the human brain hasn´t been properly measured, so, saying that we use 10% is like saying that you know 10% of the universe when you don´t know how big it really is!\nb)"More" is not the answer I would look for. We should start with "better".
672377
One of the differences is in how much pre-frontal lobe cortex we have. The pre-frontal lobes have to do with "connecting the dots"...logical analysis, association...it allows us to visualize the future, make rationale judgments and plan. For this reason hey call it the "executive" part of the brain. In humans, 33% of the cortex, the thinking part of the brain, is frontal. In chimpanzees, it's only about 10%. That's a huge difference, signifying that humans have a whole lot more of the kind of brain function that produces higher level intelligence.
271293
Don't believe half of what you read at snopes.  A bias is a bias.\n(1)  Humans use much more than 10% of our brains, but 10% seems to be the active part associated with our conscious minds.\nMRI studies are still going on, but most of the functionality of the brain is still a mystery.\n(2)  The are more bodies and skeletons for humans than people walking around.  This may not be true in less than a century.\n(3)  The Great Wall of China is one of the few man-made objects than can be seen from space (orbit).  It can only be seen from the moon with a telescope.
276541
It's a huge misconception that people only use 8% of their brains.  I'm a neuroscientist and have yet to find someone who will volunteer to let me take out 92% of their brain.  If you take out 92% of a brain, that person would be lucky to be alive in a persistent vegitative state.  \n\nTo answer the question, why people loose their memory ...\nPeople loose anything they don't use on a regular basis, including performing tasks or remembering information.  If you don't 'excite' a conection in the brain regularly, that conection degrades, as it is an inefficient use of brain energy to keep a conection alive when it isn't needed.  It's just a part of life.
1158573
No, this is a myth. A large part of our brain is used as proved by MRI's.
212259
the brain is capable of processing 400,000 bits of information a second,we process 2000 what does that tell you?consciously trying to solve two difficult problems at once is unlikely.Good Luck
666808
No. The way we remember things is not just localized to one specific section in the brain, but it is a combination of neural networks essentially. Even if it was localized it would be very difficult to make someone specifically forget this without hurting other memories. Plus at present time drugs cannot be used to work locally in one specific section of the brain...even though nanotechnology will help us come closer to that goal.
656580
We don't. Our other brain is working.
1087698
>>  well let u know a secret did u know that we use only 10% of are brains and the outher 90% we dont even know about \n\nThis is supposed to be a secret?  It's only one of the most quoted "facts" in existence.  And it's completely nonsense.\n\nOh, and to the original question, most of relativity *has* been proven.
388686
What is the use of having a brain without avenues to use it?Now that our people can move out and use it it is good for them and for others.\nFrom economic point of view it restricts employment of overqualified people in domestic industries,for lesser pay.(Underemployment) When qualified persons find good jobs abroad, the lesser privileged accommodate themselves inside our country. It reduces the imbalance between the brain and money. They need the brain and we need their money.\nIn some sense it is boon.
898350
Actually, "smarter" mammal have larger brains in ratio to the size of their body.  If you were to take the ratio of size/weight of a human brain and his body and compare that with an elephant, you would find that a human's ratio is much higher.  I've heard contradicting theories with regard to actual percentage used.  We do in fact use most areas of our brain.  Why other areas are not in use probably have to do with evolution.  What sets us apart from other mammals is the amount of things we create for comfort and not survival.  All animals, there may be case by case exceptions, operate under the need to survive.  We operate under what is comfortable.