RT @criticalneuro
Question about replay & rumination:
Some assume rumination = replay.
But it seems to me that rumination content reaches consciousness but replay need not be.
Does someone study/model that difference?
If rumination = replay + X,
what is X? Conscious, cortex-driven, self-related?
@smfleming Ruminations are often inaccurate and filled with distortions, why would anyone assume rumination = replay? Do unconscious ruminations even exist? (this would defy their definition)
@neurocritic I guess it depends on the definition of replay- if by replay we mean a sequence of decodable internal states, then this could accommodate distortions with respect to world states / veridical memory etc. I agree unconscious rumination doesn’t make much sense. But unconscious replay seems to exist… so interesting to figure out what makes the difference
@antoniahamilton @smfleming That's a fascinating observation. The images came from somewhere (stored, imagined), and the potential danger threshold was crossed.
In OCD this process goes awry and unrealistic fears are played over and over again in an uncontrollable fashion.
@smfleming Maybe it's more of a continuum. How much replay is actually veridical?
@neurocritic probably only a small proportion - in the sense that it is an active process of learning / model-building. So it can replay things that have not actually been experienced (as in the neat MEG work by Yunzhe Liu, Tim Behrens and co)
@smfleming @neurocritic I don't know if this counts as rumination & replay, but when parenting a toddler I had more than one distinct experience of having vivid imagery of a plausible danger to the toddler come into my mind, seemingly out of nowhere. And that would obviously prompt me to take action. i did wonder if my brain were somehow unconsciously computing possible events and throwing the 'danger' ones into awareness for action. But I've never devised a way to experimentally test it.