If you're interested in memory at somewhat higher level of abstraction check out the recent work on "cognitive maps". It started decades ago with seminal work

If you're interested in memory at somewhat higher level of abstraction check out the recent work on "cognitive maps". It started decades ago with seminal work on place & grid cells in spatial navigation (https://www.nobelprize.org/prizes/medicine/2014/may-britt-moser/lecture/ https://www.nobelprize.org/prizes/medicine/2014/may-britt-mo...) which was later shown to be generalizable to multidimensional "concept spaces". It's probably the most exciting field in neuroscience right now, it also maps very nicely into mathematics of high-dimensional spaces: "Navigating cognition: Spatial codes for human thinking" https://science.sciencemag.org/content/362/6415/eaat6766.abstract https://science.sciencemag.org/content/362/6415/eaat6766.abs... "Organizing conceptual knowledge in humans with a gridlike code" https://science.sciencemag.org/content/352/6292/1464 https://science.sciencemag.org/content/352/6292/1464 "The Hippocampus Encodes Distances in Multidimensional Feature Space" https://www.sciencedirect.com/science/article/pii/S0960982219302052 https://www.sciencedirect.com/science/article/pii/S096098221... "A non-spatial account of place and grid cells based on clustering models of concept learning" https://www.nature.com/articles/s41467-019-13760-8 https://www.nature.com/articles/s41467-019-13760-8 "A learned map for places and concepts in the human MTL" https://www.biorxiv.org/content/10.1101/2020.06.15.152504v1.abstract https://www.biorxiv.org/content/10.1101/2020.06.15.152504v1.... "What Is a Cognitive Map? Organizing Knowledge for Flexible Behavior" https://www.sciencedirect.com/science/article/pii/S0896627318308560 https://www.sciencedirect.com/science/article/pii/S089662731... "A map of abstract relational knowledge in the human hippocampal–entorhinal cortex" https://elifesciences.org/articles/17086 https://elifesciences.org/articles/17086 "Map-Like Representations of an Abstract Conceptual Space in the Human Brain" https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7884611/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7884611/ "Knowledge Across Reference Frames: Cognitive Maps and Image Spaces" https://www.sciencedirect.com/science/article/pii/S1364661320301327 https://www.sciencedirect.com/science/article/pii/S136466132... "Concept formation as a computational cognitive process" https://www.sciencedirect.com/science/article/pii/S235215462030190X https://www.sciencedirect.com/science/article/pii/S235215462... "Efficient and flexible representation of higher-dimensional cognitive variables with grid cells" https://journals.plos.org/ploscompbiol/article?id=10.1371/journal.pcbi.1007796 https://journals.plos.org/ploscompbiol/article?id=10.1371/jo... "The cognitive map in humans: spatial navigation and beyond" https://www.nature.com/articles/nn.4656 https://www.nature.com/articles/nn.4656 "A general model of hippocampal and dorsal striatal learning and decision making" https://www.pnas.org/content/117/49/31427.short https://www.pnas.org/content/117/49/31427.short "On the Integration of Space, Time, and Memory" https://www.sciencedirect.com/science/article/pii/S0896627317305603 https://www.sciencedirect.com/science/article/pii/S089662731...