8 Amusing Facts About the Human Brain

The human brain is the most fascinating body part with complex mechanisms and unfathomable number of functions.  It’s the source of new ideas, composes concertos, formulates equations as well as store memories and it’s the aquifer of human emotions.  While it does all that, man is delighted to study it to bring about more solutions and enhance the human existence.  Here are some facts about the human CPU.

  1. Although the brain is only 2% of the total body weight, it uses up 20% of the energy the body generates.  It also uses up 20% of the body’s blood and oxygen.  If the brain loses blood for a mere 10 seconds, the body falls unconscious. The brain can survive up to 6 minutes without oxygen and then it begins to get damaged or slowly die when it’s not resuscitated in time.
  2. Despite its role as the command center of the central nervous system, it’s the sole organ in the body that does not have nerves.  It means that the brain is numb to pain but it is surrounded by nerves, about 100,000 miles of blood vessels, and lots of fat tissue.
  3. The brain is made up of 60 – 70% water.  A drop of 2% in the brain’s fluid levels can slow down mental processing, impair memory, blur one’s vision as well as reduce attention span significantly.
  4.  A newborn’s brain grows three times its original size in the first year; then brain size is almost the same size as an adult brain.  This is why a baby’s head is disproportionately larger than it should.
  5. The brain stops growing at age 18 but the neurons—the brain transmitters– will continue to develop and create new ones throughout as long as one is mentally active.  The cerebral cortex also grows thicker as humans learn to use it.
  6. The brain has enough energy to power a light bulb. It generates between 10 to 23 watts of power during wake hours.
  7. The average human brain weighs 3 lbs.  The cerebrum makes up 85% of the weight.
  8. The human brain’s memory capacity has not yet been determined exactly but it is believed to have the ability to retain five times as much information as a whole encyclopedia set.  In digital terms, the brain can hold up to 1,000 terabytes of information.  One gigabyte of storage is the same as 500,000 pages of data, which makes a terabyte equal to 500 million pages of information. Do the math.

Article publié pour la première fois le 06/05/2013

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