Human Brain Facts

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  • The Brain has a joke centre. Sometimes, patients with damaged frontal lobes are unable to ‘get’ jokes.
  • You can’t hear phone conversations in noisy rooms – The brain can’t distinguish background noise from the voice on the phone.
  • Yawning actually wakes you up – Yawning gets more air into the lungs, thus increasing oxygen to the brain.
  • We’re hardwired to remember annoying songs – ‘Sequence recall’ to learn daily routines also lets songs get stuck in our heads.
  • The brain uses less power than a refrigerator light – The brain uses 12 watts of power – 17% of the body’s energy.
  • Frequent jet lag can damage memory – Stress hormones released during jet lag can damage the temporal lobe and memory.
  • Altitude makes the brain see strange visions – Oxygen deprivation is likely to interfere with visual and emotional processing.
  • Shoot-’em-up computer games aid multitasking – Shooting multiple enemies spreads your attention and means you’re constantly reacting to events.
  • It is impossible to tickle yourself – The brain dulls expected sensations when we cause them ourselves.
  • Brain sunlight makes you sneeze – Crossed wires in the brain stem send signals from the eye via the nose.
  • The weight of the brain is about 1.36kg.
  • The brain is made up of roughly 75% water.
  • Your brain stops growing at age 18.
  • Your brain uses 20% of the total oxygen in your body.
  • Studies show that brain waves are more active while dreaming than when you are awake.
  • Excessive stress has shown to alter brain cells, brain structure and brain function.
  • The brain can live for 4 to 6 minutes without oxygen, and then it begins to die. No oxygen for 5 to 10 minutes will result in permanent brain damage.
  • Reading aloud and talking often to a young child promotes brain development.
  • A newborn baby’s brain grows about three times its size in the first year.
  • The human brain is the fattest organ in the body and may consists of at least 60% fat.