A few questions about mini-columns:
- Are all mini-columns the same?
- Is a single mini-column considered a column of neurons in a single cortical column layer or is a single mini-column span all layers?
- Is there a fundamental role/function that all mini-columns do?
According to Numenta (unless I misunderstood):
- No, but the differences are minor.
- The minicolumn spans all layers.
- Here I’m not sure, but I think the question is important. This is what I think. All minicolumns do:
- receive input
- normalise input through a spacial pooler
- detect sequences through a temporal memory
- compare states through voting with neighboring minicolumns
- project outputs to the thalamus
- project outputs to neighboring columns in the same layer
- project outputs to cells in other layers
- project outputs to cells in other maps of the neocortex
If someone spots errors, please please correct me.
They’re not sure, I think.
This might show different minicolumns in two sublayers of the same layer. From what I remember, I’m not 100% convinced.
Lattice system of functionally distinct cell types in the neocortex
Functionally, a minicolumn is just a group of cells which represent the same thing, and probably each have something else (context) so there’s a purpose having multiple cells. There could be things which aren’t physically organized like minicolumns but function the same.