The Default Mode Network (DMN) and its Role in Distractions

The default mode network (DMN) is a network of brain regions that is most active during wakeful rest and is associated with internal mental processes such as daydreaming, recalling memories, and thinking about oneself. The DMN tends to be activated during rest and deactivated during tasks that require focused attention on external stimuli or goals. Imbalances in DMN activity and the task positive network (TPN) can lead to distractions, as the DMN may remain overly active during task-focused activities, making it harder to pay attention. The ability to focus involves coordination between multiple brain networks, including the DMN, TPN, and the Salience Network. Dysfunctions in this coordination can contribute to difficulties in maintaining focus.