Answer this question to the best of your ability:
Can mental training or cognitive behavioral therapy affect DMN activity?
Yes, various forms of mental training or therapeutic interventions can potentially impact Default Mode Network (DMN) activity. Cognitive Behavioral Therapy (CBT), for instance, often aims to replace maladaptive thought patterns with more helpful ones, which could affect DMN's activity over time.

Similarly, mental training practices like mindfulness meditation, as mentioned earlier, have been shown to decrease DMN activity and increase connectivity between the DMN and regions associated with attention control. This can lead to better focus and concentration during daily tasks and potentially reduce symptoms of anxiety and depression related to excessive rumination or mind-wandering.

However, more research is needed to fully understand how different therapeutic interventions impact DMN activity in various populations over time.