When your mind is wandering, your brain’s “default mode” network is active. Its discovery 20 years ago inspired a raft of research into networks of brain regions and how they interact with each other.

A study published June 25 in the American Journal of Psychiatry provides new insights into a long-standing question in psychiatric research: What is the underlying neurobiological mechanism of ...

What Is the Default Mode Network? The default mode network (DMN) is a system of connected brain areas that show increased activity when a person is not focused on what is happening around them. The ...

The original version of this story appeared in Quanta Magazine. Whenever you’re actively performing a task—say, lifting weights at the gym or taking a hard exam—the parts of your brain required to ...

The default mode network (DMN) is a set of interconnected brain regions known to be most active when humans are awake but not engaged in physical activities, such as relaxing, resting or daydreaming.