Have you ever stopped to think about the way your
brain works when you’re, well, not thinking about it? It’s a hard
concept to wrap your head around, but we thought we’d do a little
exploring to find out what’s going on inside these noggins of ours.
We’ve partnered with Cleveland Clinic to bring you 14 amazing facts you
didn’t know about the human brain. You’ll never think about it the same
way again.
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1. The adult human brain weighs approximately 3 pounds.
Men average 2.9 pounds (1,336 grams) and women average 2.6 pounds (1,198
grams). A bigger brain doesn’t correlate to higher intelligence: After
all, Albert Einstein’s brain weighed a rather average 2.7 pounds (1,230
grams).
2. Your brain generates enough electricity to power a 25-watt light
bulb. |
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3. A small portion of the population experiences synaesthesia: they may
hear colors, smell words or see a concept in a spatial location.
First discovered in the 19th century, this mixing of the senses is a
perceptual condition. While synaesthesia may be caused by brain trauma
or degeneration, many people report symptoms from an early age.
4. The reason why we dream is still a scientific mystery.
Some scientists posit that it’s a way to “exercise your brain” by
keeping it stimulated as you sleep; others claim that allows the brain
to fully absorb thoughts and memories from the day.
5. Prosopagnosia, or “face blindness,” affects approximately 2.5 percent
of the population.
Brain scan research and a 2012 study out of Stanford University has
suggested that our temporal lobes -- most crucially, activity in the
fusiform gyrus brain region -- is crucial for facial recognition.
Prosopagnosia can be congenital or acquired, but damage to this region
inhibits the part of the brain that allows one to see human faces as
holistic, memorable objects.
6. You can’t tickle yourself because your cerebellum prevents you from
doing so. |
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The cerebellum, which is responsible for physical movement, can predict
the sensation and prevent a response, according to studies conducted at
University College London. Evolutionary scientists posit that tickling
behaviors developed in primates as a form of social bonding.
7. In some circles, animal brains are considered a delicacy.
But, as we mentioned before, they are fatty, high in cholesterol, and
may contain agents that cause “mad cow” and other diseases. For the
record: Animal brains are said to have an “animalistic flavor that's
neither iron-intensive like the livers or gamey like the kidneys,”
according to Serious Eats’ Chichi Wang.
8. Your brain uses at least 20 percent of the oxygen in your whole body.
That’s about three times as much oxygen as your muscles need.
9. There are no pain receptors in your brain, so you can’t actually
“feel” pain.
While your brain detects and processes pain in tandem with your spinal
cord, you actually can’t feel someone poking at our brain tissue --
which is why surgeons are able to perform brain surgery while you’re
awake. We will note that your scalp, along with the membranes that cover
your bones and brain tissue, do have the ability to feel pain.
10. People who have lost limbs may use mirror therapy to address phantom
pain. |
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According to the New England Journal of Medicine, phantom limb pain
occurs in at least 90 percent of amputees. Introduced by neuroscientist
V.S. Ramachandran at the University of California, San Diego, mirror
therapy seemingly tricks the brain into a more normal sensory pattern.
Research is still spotty, and scientists are still unsure of how phantom
pain works.
11. Here’s something that’s NOT true: You definitely use more than 10
percent of your brain.
A pernicious rumor that’s been around awhile and persistent one in pop
culture, but it’s patently false: there is really not part of the brain
that doesn’t have a function.
12. Most right-handed people process language on the left side of their
brains, but left-handed people sometimes show activation on both sides.
However, one hemisphere of the brain is never the provenance for all
language processing, and creativity and intelligence aren’t separated
neatly along left brain / right-brain lines. In many cases, the brain
works bilaterally.
13. Human brain development does not finish until around age 25.
As neuroscientist Sandra Aamodt quipped on NPR, “The car rental
companies got to it first, but neuroscientists have caught up.” Aamodt
explained that the prefrontal cortex -- that is, the area of the brain
responsible for impulse control -- is not fully developed until your
twenties, making 18-year-old “adults” more likely to engage in risky
behavior.
14. Brain is the only object that can contemplate itself.
Consider that.
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