The human brain has evolved significantly over millions of years. It is much larger and more complex than the brains of our evolutionary ancestors.
The brain's wrinkled appearance is due to its folded surface. These folds, called sulci and gyri, increase the brain's surface area and allow for more neurons to be packed into the skull.
The human brain contains approximately 86 billion neurons!!
These are the cells responsible for transmitting information through electrical and chemical signals.
Despite being the control center for pain perception, the brain itself does not have pain receptors. It cannot feel pain, that's why brain surgeries can be performed while patients are awake.
Although the brain represents only about 2% of the body's weight, it consumes about 20% of the body's energy and oxygen supply.
Dreams and Creativity
Some of the most creative and innovative ideas in history have been generated during dreaming. The brain continues to work on problems and puzzles even while you sleep.
Information in the brain travels at different speeds, but the fastest signals can travel up to 250 miles per hour.
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