The default mode network, or DMN, becomes active when we allow our minds to wander. When the DMN is engaged, it works on our memories, putting past events into context and making moral evaluations about things that have happened. It also imagines the future, tries to understand the emotions of others, and reflects on our own emotions and decisions. The default network is crucial for empathy, for self-reflection, and for Theory of Mind, the ability to imagine what others may be thinking.
