Recent research in neuroscience, psychology and design shows that
doodling can help people
stay focused, grasp new concepts and
retain information. A blank page also can serve as an extended playing field for the brain, allowing people to revise and improve on creative thoughts and ideas.
Doodles are spontaneous marks that can take many forms, from abstract patterns or designs to images of objects, landscapes, people or faces.
Some researchers suspect doodling may help the
brain remain active by engaging its "default networks"—regions that maintain a baseline of activity in the cerebral cortex when outside stimuli are absent, the Lancet study says.
A doodle also can
express emotions too complex for words.
Ref : Notes taken from an article in The Wall Street Journal.