Ah, interesting. I have not read much about Tibetan Buddhism. Is the loop you are referring to specifically one of 'subjectivity' (i.e., the self perceiving the self) or the broader loop of reincarnation? Any recommended introductory books on the topic for a philosophically-inclined spiritually-inexperienced Westerner?
The latter. The 4th volume of lamrim (by tsong-kha-pa) is a good summary with references to other books. That volume has been translated into English and us called "discerning the real" or something like that.
Tsongkhapa gives a reference to a more detailed "manual" called "the 10 levels of sravakas", but that book hasn't been translated, although Max Muller made some initial sketches.
