Is There Altered Connectivity Between DMN and Control Networks in ADHD? 

Yes, studies of the ADHD default mode network show that there are consistent connectivity changes between the DMN and various executive control networks. These altered interactions or network imbalance reflect reduced functional integration between resting and task‑focused brain networks, which contributes to many ADHD symptoms.  

Functional MRI investigations reveal that people with ADHD often have weaker anti‑correlations (i.e. less mutual suppression) between the DMN and task‑positive control networks (like the frontoparietal network or cognitive control system). This means that when a person needs to focus on a task, their brain may be less able to shift away from internally focused default mode activity. Additionally, dynamic connectivity studies show that ADHD is linked with greater variability in how the brain switches between states of control and default mode engagement, suggesting that these control networks are less stable or less efficient.  

Common Symptoms Connected to DMN‑Control Network Disruption 

Below are symptoms often tied to these connectivity differences, and how treatment may help: 

Trouble Sustaining Focus or Shifting Attention 

Because the DMN remains more active when it should be suppressed, people with ADHD may drift off during tasks or find it hard to switch from resting or internal thought to task demands. Medication (especially stimulants) can enhance suppression of DMN and strengthen engagement of control networks. CBT helps build strategies for maintaining focus and practising attention‑shifting techniques. 

Poor Task Organisation and Impulse Control 

Weakened synchronisation between the DMN and executive control networks can lead to impulsive behaviour and disorganisation, forgetting steps, jumping between tasks, or struggling with planning. Behavioural therapy supports building routines and self‑monitoring, and medication may also improve the functional integration needed for better executive control. 

Visit providers like ADHD Certify for personal consultations tailored to your ADHD care and support needs. 

For a deeper dive into the science, diagnosis, and full treatment landscape, read our complete guide to ADHD default mode network.