Chronic pain is known to alter the brain’s default mode network (DMN). The DMN is a group of interconnected brain regions activated when a person is not focused on the external world. Key DMN functions include mind wandering (daydreaming, thinking about the past or future, imagining scenarios), self-reflection (considering thoughts, feelings, and experiences), theory of mind (understanding others’ thoughts and intentions), and memory (retrieval and processing).
A recent study published in the journal Pain by German researchers investigated the relationship between chronic back pain and DMN alterations. The study, titled “Beyond the chronic pain stage: default mode network perturbation depends on years lived with back pain,” examined patients with chronic back pain (CBP), subacute back pain (SBP), and healthy controls using fMRI.
Results showed that the DMN is significantly altered in CBP patients compared to healthy individuals. Importantly, the degree of DMN disruption increased with the duration of pain, suggesting that the brain adapts to persistent pain over time. This adaptation is influenced by cognitive coping strategies or how individuals mentally manage their pain.
The study found that coping attitudes mediate the link between DMN changes and pain duration. This implies that how people think about and handle pain impacts their brain’s adaptation to it. Effective pain coping strategies could potentially lessen the negative effects of chronic pain on the brain, emphasizing the importance of psychological interventions like meditation, cognitive behavioral therapy (CBT), and acceptance-commitment therapy (ACT).
These findings also provide a scientific basis for treatments like transcranial magnetic stimulation (TMS) and other brain stimulation methods, which aim to restore normal brain connectivity, including DMN function.
