Notes on “A unified theory for the origin of grid cells through the lens of pattern formation”

I just read the paper, I’m still processing it, but here are some of my notes, thoughts and questions. https://papers.nips.cc/paper/2019/hash/6e7d5d259be7bf56ed79029c4e621f44-Abstract.html 3 Main models types in neuroscience: Descriptive explanations delineate an abstract characterization of aphenomenon, while mechanistic and normative explanations bridge abstractions of different levels.Mechanistic explanations show how a phenomenon emerges from lower-level components (e.g., howcircuit… Continue reading Notes on “A unified theory for the origin of grid cells through the lens of pattern formation”

Notes on “Design Principles of the Hippocampal Cognitive Map”

Paper link: https://papers.nips.cc/paper/2014/hash/dfd7468ac613286cdbb40872c8ef3b06-Abstract.html “We also propose that grid cells compute the eigendecomposition of place fields in part because is useful for segmenting an enclosure along natural boundaries. When applied recursively, this segmentation can be used to discover a hierarchical decomposition of space. Thus, grid cells might be involved in computing subgoals for hierarchical reinforcement learning.”… Continue reading Notes on “Design Principles of the Hippocampal Cognitive Map”

A review of “Grid-like Neural Representations Support Olfactory Navigation of a Two-Dimensional Odor Space”

I just finished reading “Grid-like Neural Representations Support Olfactory Navigation of a Two-Dimensional Odor Space” It’s an interesting paper that shows that olfactory(smell) seems to be represented with grid-like codes in the brain. The authors read and reference a bunch of papers where other researchers test if grid cells can represent other kinds of sensory… Continue reading A review of “Grid-like Neural Representations Support Olfactory Navigation of a Two-Dimensional Odor Space”

Review of “The entorhinal cognitive map is attracted to goals”

Paper: https://www.science.org/doi/10.1126/science.aav4837 The scientists did experiments where they let a rats learn a maze. On a daily basis they change reward locations of food. They measured firing fields of grid cells before rewards, during learning of reward locations, and after learning to understand the firing rates. They found that the grid fields moved toward the… Continue reading Review of “The entorhinal cognitive map is attracted to goals”

interesting research on maps in the brain

Grid Cells, Place Cells, and Geodesic Generalization forSpatial Reinforcement Learning https://journals.plos.org/ploscompbiol/article?id=10.1371/journal.pcbi.1002235 What Is a Cognitive Map? Organizing Knowledge for Flexible Behavior https://www.sciencedirect.com/science/article/pii/S0896627318308560 Locations in the Neocortex: A Theory of Sensorimotor Object Recognition Using Cortical Grid Cells https://www.frontiersin.org/articles/10.3389/fncir.2019.00022/full

Grid cell research areas

Grid cells are a potential path to AGI. Some areas I am researching: what grid cell like representations might look like in the neocortex grid cells as eigenvectors of the successor representation grid cells as inferred global task structure that are factorized how numenta envisions grid cells in the neocortex allocentric and egocentric views with… Continue reading Grid cell research areas