A new study by University of British Columbia researchers, published in Proceedings of the National Academy of Sciences, suggests that daydreaming is an extremely active, cognitively complex mental state:
"Mind wandering is typically associated with negative things like laziness or inattentiveness," says lead author, Prof. Kalina Christoff, UBC Dept. of Psychology. "But this study shows our brains are very active when we daydream - much more active than when we focus on routine tasks."...
Until now, the brain's "default network" - which is linked to easy, routine mental activity and includes the medial prefrontal cortex (PFC), the posterior cingulate cortex and the temporoparietal junction - was the only part of the brain thought to be active when our minds wander.
However, the study finds that the brain's "executive network" - associated with high-level, complex problem-solving and including the lateral PFC and the dorsal anterior cingulate cortex - also becomes activated when we daydream.
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