I guess you misunderstood my point. I’m talking about grid cells, not grid of cells.
I should have gone one step further and included this part of the video CollinsEM presented in another topic. In this case the equally sized units are the “doughnut of inhibitory connectivity” around the neurons.
I’m trying to find a good example to explain this kind of grid formation, but it’s not an easy one to find an example for. Best I can think of are equally powerful radio stations operating at the same frequency (by inhibition) not being allowed to interfere with the signal from neighboring stations. The “visualization of this inhibition generated pattern” that Eric Collins is working on would be useful right now!