Neuron-Popping Facts About The Human Brain
“Neuroscience is by far the most exciting branch of science because the brain is the most fascinating object in the universe. Every human brain is different - the brain makes each human unique and defines who he or she is.” - Stanley B. Prusiner.
Here are our favorite facts about the human brain!
Human Brain Facts
1. Making Sense of Light
It takes about 0.2 seconds for your brain to understand the light that reaches your eye.
The slight difference in time between light hitting your pupil, and your reaction to said stimulus, is a fascinating phenomenon. It's the basis for the difference in reflexes between a top-level athlete and a regular-joe, as well as one of the reasons our minds can fall prey to what we call optical illusions.
2. Greedy Little Brains
Your brain accounts for only 2% of your body weight, yet it uses 20% of the total oxygen and blood in your body.
It's fascinating. That little grey blob weighs just about 4 pounds, and yet is quite possibly responsible for essentially all of our success as a species.
This also shows that, at least when it comes to brain power, bigger is not always better. Cows, whales, and elephants (in addition to many other creatures) all have much bigger brains than we do. And yet we eat steak like it's no big deal. Guess we're winning, right?
3. Keep The Fuel Coming
Lack of oxygen in the brain for 5 to 10 minutes results in permanent brain damage.
Interestingly, though, this does not hold true in every case. As with most facets of human life, the performance of your brain in this particular arena can be improved with rigorous training. Free divers are one group that does just that, frequently going without air at 10 to 15 minutes at a time, and forcing their brains to adapt. The current record for such a feat actually stands at an astounding 22 minutes.
