Abstract
“Popcorn brain” has entered popular discourse as a metaphor for a mind increasingly accustomed to rapid, fragmented, and frequently rewarding digital stimulation. The expression is intuitively appealing, but it is not a recognized neurological diagnosis or an established scientific construct. This critical mini-review therefore uses the term cautiously, as a descriptive umbrella for questions that are better studied through established constructs such as problematic digitalmedia use, media multitasking, attentional control, reward learning, information overload, sleep disruption, and emotional well-being. Evidence from cognitive, behavioral, and neuroimaging research suggests that intensive or poorly regulated digital engagement can be associated with distractibility, inefficient cognitive control, altered rewardrelated processing, and difficulties sustaining attention. Yet the literature does not support a simple claim that ordinary technology use “rewires” or damages the brain. Effects vary with the type of digital activity, developmental stage, baseline vulnerability, context, and whether use is active, purposeful, compulsive, or interruption-driven. Recent meta-analytic work also complicates popular prescriptions for “digital detox”: reducing use may benefit some outcomes, but complete abstinence does not belong to improve well being. We argue that the scientific value of the popcorn-brain metaphor lies not in treating it as a disorder, but in using it to organize testable questions about fragmented attention, reward expectancy, cognitive offloading, and self-regulation. Future research should prioritize longitudinal and experimental designs, objective device-use measures, preregistered neurocognitive outcomes, and developmentally sensitive models that distinguish amount of screen exposure from the quality and pattern of digital engagement