What are the functions of the DMN?

The Default Mode Network (DMN) is predominantly active when we're not focused on specific tasks. It plays several key roles, including:

1. Mind Wandering: The DMN is engaged during mind wandering, spontaneous imagination, and daydreaming, as well as when our thoughts drift between the past, present, and future 1 2.

2. Self-Referential Thoughts: It is involved in self-reflection and self-referential thoughts, essentially when we think about ourselves or our life stories 3 4.

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     2

     Brain Processing Differences

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     4

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     5

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3. Imagination and Creativity: The network is crucial for imagination and creative processes. It becomes active when we close our eyes and reflect inwardly, drawing from memory and past experiences to create new ideas or concepts 4.

4. Incompatibility with Task Engagement: When we're engaged in specific tasks or focused externally, the DMN's activity is suppressed to allow other brain networks to take over. This switch optimizes performance and focus 2 3.

5. Emotional and Narrative Processing: It supports emotional and narrative construction in our minds, playing a role in forming narratives and understanding complex emotions and relationships 2.

In individuals with ADHD, the DMN may remain overly active during tasks that require focus, contributing to distracted thoughts and difficulty maintaining attention 5.