I have a few questions on the article “A framework for Intelligence and Cortical Function Based on Grid Cells”. The questions are not on the basic idea yet, but on the grid cell theory behind it. You say that every learned environment is associated with a set of unique locations. So suppose you have two identical rooms, except one is colored blue and the other is colored green. You release a rat in one room, it learns its surroundings, then you release it in the other room, and it learns to get around in that room too. So it seems that the grid cells that are active at the left back corner of the blue room should be the same as the grid cells that are active at the left back corner of the green room. But it seems you are saying this is not true. If it is not, then why not? You also say that on entering a learned environment, grid cell modules anchor differently. Anchor means which grid cells are selected. Do you have a diagram that would illustrate this? Finally, in the example of the cup with the logo, why do two spaces exist - logo space and cup space? Are they both represented by the same modules? If they are, I would think there would be danger of overlap, unless you switch in time from one to the other and back.
Thanks in advance