default mode network
Definition: The default mode network (DMN) is a set of brain regions that are most active when a person is at rest and not focused on the outside world.
In plain English: Think of the DMN as the brain’s “idle mode” – it lights up when you’re day‑dreaming, recalling memories, or thinking about yourself. It includes areas like the medial prefrontal cortex, posterior cingulate, and angular gyrus. When we’re engaged in a task, the DMN usually quiets down, allowing other networks to take the lead.
Why it matters in this research: Psychedelic substances such as psilocybin and LSD are known to temporarily disrupt DMN activity and its internal connections. This “DMN reset” is thought to underlie the profound changes in self‑perception and emotional processing that people report during psychedelic experiences. In neuroscience studies, measuring DMN dynamics helps researchers understand how psychedelics might foster neural plasticity and potentially treat conditions like depression or PTSD.
Commonly misunderstood as: The DMN is not a single “brain setting” that can be turned on or off at will; it is a dynamic network that fluctuates with attention, memory, and social cognition. It also isn’t the only network involved in self‑referential thought—other systems interact closely with the DMN.
Related terms
- [Functional connectivity]
- [Neural plasticity]
- [Psychedelic experience]
Educational Disclaimer
This article is for informational and educational purposes only. It is not
medical advice, mental health advice, diagnosis, treatment guidance, or a
recommendation to use any substance, supplement, therapy, or protocol.
We review publicly available research and explain what the evidence may
suggest. Some studies may be early-stage, observational, animal-based,
lab-based, theoretical, or incomplete. Always consult a qualified
professional before making health-related decisions.
Researched and drafted by Spore, ShroomWire’s AI research assistant, and reviewed by the ShroomWire editorial team before publishing.
