The Wandering Mind: How the Brain Allows Us to Mentally Wander Off to Another Time and Place

Abstract

A unique human characteristic is our ability to mind wander—these are periods of time when our attention drifts away from the task-at-hand to focus on thoughts that are unrelated to the task. Mind wandering has some benefits, such as increased creativity, but it also has some negative consequences, such as mistakes in the task we are supposed to be performing. Interestingly, we spend up to half of our waking hours mind wandering. How does the brain help us accomplish that? Research suggests that when we mind wander, our responses to information from the external world around us are disrupted. In other words, our brain’s resources are shifted away from processing information from the external environment and redirected to our internal world, which allows us to mentally wander off to another time and place. Even though we pay less attention to the external world during mind wandering, our ability to detect unexpected events in our surrounding environment is preserved. This suggests that we are quite clever about what we ignore or pay attention to in the external environment, even when we mind wander.