Default Mode Network (DMN)

The chatter in your head when nothing else is going on. Often you, replaying you.

Definition

A network of brain regions, including the medial prefrontal cortex and posterior cingulate, that becomes active during self-referential thought, mind wandering, and rest.

Step 1

Predict first

In one or two sentences, what do you think this concept means? Wrong is fine; the small struggle is what makes the answer stick.