Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
On average, there's 100 billion neurons in the human brain.
83
On average, there's 300 billion neurons in the octopus brain.
129
An ant brain has about 250 000 brain cells. A human brain has 10,000 million so a colony of 40,000 ants has collectively the same size brain as a human.
118
Brain freeze is caused by the brain sensing the drop of temperature on your palate and increasing blood pressure in an attempt to save you from freezing.
14
There are more nerve cells in the human brain than there are stars in the Milky Way.
349
Research has shown that allowing chocolate to melt in your mouth produced brain and heart rate activity that was simliar to - and even stronger than - that produced with passionate kissing.
173
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99