In part 2 Jeff explains an idea that grid cells might be misinterpreted and can essentially be place cells within environments of a particular scale in which there will be no repetitions among the cells in a given module. If so than, given two grid cell modules of different scale, can cells from a smaller scale one be interpreted as place cells within a single firing field of a cell from a larger scale one? An animal could use those when it needs to make a higher-prescision movement.
Also on the video at the very begining of part 2, the oval that goes from rodent’s head changes not only in direction, but also in length (scale?). Not sure what exactly this oval represents though
And another question: is there any correlation between place field length in a given direction and an average speed of a rodent in that direction within this place field?