Internal narrative?
Do you ever have conversations with yourself?
For me it manifests as other aspects of myself forming temporary 'other mes' when it comes to deep thought of something. Normally I operate on a multi processor setup with each working on its own tasks.
But for deeper stuff... Each aspect of whatever it is becomes its own individual, taking on the different perspectives I need to work through whatever it is, or find different thought patterns. I'm not sure how to explain it, beyond it becomes more of a senate debate floor with one always presiding over to keep order.
I unno. My brain is weird. :3
