Answer this question to the best of your ability:
Is there a difference between mind-wandering and rumination? And how does DMN relate to each?
Mind-wandering and rumination are both types of self-generated thoughts that occur when our attention is not fully engaged on the external task. However, while mind-wandering involves a wide range of unguided thoughts, rumination specifically refers to negative, repetitive thoughts about oneself or one's circumstances.

The Default Mode Network (DMN) is associated with both mind-wandering and rumination. As mentioned earlier, studies have shown increased activity within the DMN during self-referential thinking, which can include both mind-wandering and rumination. However, it's crucial to note that not all mind-wandering is maladaptive or linked to mental health issues; it could simply be our brain's way of resting and rejuvenating.

On the other hand, excessive rumination has been associated with various negative outcomes such as anxiety, depression, and reduced cognitive performance. It's worth mentioning that while DMN is implicated in both mind-wandering and rumination, it doesn’t necessarily mean that all activity within this network is detrimental to mental health.