I am a collector of theories of consciousness :) assuming your quote above is making reference to the "scale" at which "self" is understood, you might be interested in this theory:
Information Closure Theory of Consciousness (2020) https://www.researchgate.net/publication/342956066_Informati...
This reddit comment sums it up better than the paper seems to be able to: https://www.reddit.com/r/MachineLearning/comments/dco3t1/com...
> Consciousness (at least, consciousness(es) that we are familiar with) seems to occur at a certain scale. Conscious states doesn't seem to significantly covary with noisy schocastic activities of individual cells and such; rather it seems to covary at with macro-level patterns and activities emerging from a population of neurons and stuffs. We are not aware of how we precisely process information (like segmenting images, detecting faces, recognizing speeches), or perform actions (like precise motor controls and everything). We are aware of things at a much higher scale. However, consciousness doesn't seem to exist at an overly macro-level scale either (like, for example, we won't think that USA is conscious).