Doodling Helps Kick-Start Your Brain When It's Bored
"To understand where the compulsion to doodle comes from, the first thing you need to do is look more closely at what happens to the brain when it becomes bored. According to Jackie Andrade, a professor of psychology at the University of Plymouth, though many people assume that the brain is inactive when they're bored, the reverse is actually true.
"If you look at people's brain function when they're bored, we find that they are using a lot of energy — their brains are very active," Andrade says.
The reason, she explains, is that the brain is designed to constantly process information. But when the brain finds an environment barren of stimulating information, it's a problem.
"You wouldn't want the brain to just switch off, because a bear might walk up behind you and attack you; you need to be on the lookout for something happening," Andrade says.
So when the brain lacks sufficient stimulation, it essentially goes on the prowl and scavenges for something to think about. Typically what happens in this situation is that the brain ends up manufacturing its own material. "