On average, there's 300 billion neurons in the octopus brain.
129
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Music is as addictive to the brain as sex and drugs.
27
A human brain produces as many as 12,000 to 50,000 thoughts per day, depending on how deep a thinker a person is.
23
Studies suggest that people who appear to be constantly distracted have more "working memory" and "sharper brains".
13
There are more nerve cells in the human brain than there are stars in the Milky Way.
349
The average person's skin weighs twice as much as their brain.
131