Building upon his prior grid cell model, Marcus Lewis explores ways to transform an array of 1D grid cell oscillators to 2D grid cell modules. He evaluates and explains one possible deterministic mapping technique that could be used to achieve this.
In the second part, Jeff Hawkins attempts to explain the physical structure of minicolumns and how they might interact. He proposes a new mechanism that introduces the idea of a voltage controlled oscillator in dendrites for dimensional movement in grid cells. With this mechanism, the grid cell will represent much more complex interactions and could possibly explain how the cells make connections to each other.
Research meeting on Marcus’s new grid cell model: Marcus Lewis on Using Grid Cells as a Prediction-Enabling Basis - December 21, 2020 - YouTube
Paper Jeff referenced on oscillatory interference: https://www.jneurosci.org/content/31/45/16157
Paper Subutai mentioned on gap junctions between pyramidal cells: Gap Junctions Between Pyramidal Cells Account for a Variety of Very Fast Network Oscillations (>80 Hz) in Cortical Structures - ScienceDirect