A question for Jeff. I will not be online to hear the answer since it will be 3am in my time zone. So I hope that Jeff’s response, if any will be recorded.
Could each functional area in neocortex have shared grid cell modules say in the LGN or the entorhinal cortex? Each cortical column would multiplex with others to access this space.
This would solve several problems:
- Each cortical column would not need to contain a full set of grid cell modules of its own.
- Scaling of the sensor space (say vision) would be handled by just resizing the grid space according to the distance to the object being sensed.
- Egocentric to allocentric conversions would be automatic since the metric space used would be the common grid cell modules which as in point 2 is resized according to the object being sensed.