- "Information overload refers to the notion that we're trying to take in more than the brain can handle," says neuroscientist Daniel Levitin
- "Decision fatigue" is where we become mentally tired from making inconsequential decisions
- Levitin explains the physiological reasons behind these phenomena
Vital Signs is a monthly program bringing viewers health stories from around the world
(CNN)Here's a figure to boggle the mind: we consume about 74 gigabytes -- nine DVDs worth -- of data every day. It's amazing we're able to process and make sense of it all. So how do you think straight in the age of information overload?