default mode network (DMN)

The default mode network (DMN) is a group of brain regions that are active when you're not focused on the outside world, such as during daydreaming, remembering the past, or thinking about the future. It helps with self-reflection, internal thoughts, and understanding yourself and others. When you engage in tasks requiring attention or concentration, the DMN activity decreases. It plays a key role in our mental life, balancing internal thoughts with external demands, and is a vital part of how our brain processes personal and social information.