Popcorn brain" is a term used to describe a mental state where someone has difficulty focusing on a single task for an extended period. It's characterized by:
Increased stress, anxiety, and fatigue
Problems with sleep
Poor decision making and retention
Scattered thoughts
Fragmented attention
Rapidly switching from one topic to another
Mental restlessness
Difficulty sustaining a coherent train of thought
The term was coined in 2011 by David Levy, a researcher at the University of Washington. He suggests that the brain has become accustomed to the constant digital stimulation and mimics that frenetic pace.