# Hex Grids & 1000 Brains Theory

**URL:** https://discourse.numenta.org/t/hex-grids-1000-brains-theory/5018
**Category:** Tangential Theories
**Created:** [November 30, 2018, 10:37pm UTC](https://discourse.numenta.org/t/hex-grids-1000-brains-theory/5018 "2018-11-30T22:37:39Z")
**Posts on this page:** 1
**Showing post:** 12

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### Author: ![Bitking](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.numenta.org/bitking/32/3099_2.png) [@Bitking](https://discourse.numenta.org/u/Bitking)
#### Post date: [December 4, 2018, 9:15pm UTC](https://discourse.numenta.org/t/hex-grids-1000-brains-theory/5018/12 "2018-12-04T21:15:30Z")

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In this post, I laid out a lot of the basic geometry and spacing of the relationship between mini-columns and sub-components.

> [@Project : Full-layer V1 using HTM insights](https://discourse.numenta.org/t/project-full-layer-v1-using-htm-insights/3771/35):
>
> I have been conversing with @gmirey for some time on this general topic. We endeavored to get a sense of the scale of the relative dimensional quantities of the temporal layer, inputs and cell/column spacing, number and range of the connections. You know - the basic facts of making a realistic model. Some of what was discussed was what is known about reach and density of the dendritic arbor in the “input” layer. We established the key factors would be: what is the spacing of the ascending cort…

I made this top-view picture to show the relative spacing between the reach of mini-columns dendrites in relation to the size of the mini-columns. The blue circles are mini-columns, and the black circle is the reach of the input dendrites of the “center” mini-column.

![dendrite%20area](https://canada1.discourse-cdn.com/flex030/uploads/numenta/original/2X/c/c69353315823ee5de294e97bbc82d14b75c94053.png)

In the HTM into hex grid post I showed a side view of the pyramidal neurons with the inputs in red and the output in blue:

 ![f32-05-9781437702941](https://canada1.discourse-cdn.com/flex030/uploads/numenta/original/2X/6/60c7c188309bbbbe5bc94dfe666e0dc137b99a63.jpg)  
The 0.5 mm reach of the dendrites are the same as the black circle above and the larger blue output axonal arbor is the mutual axonal output links between mini-columns. Each reaches out to the others in this band of influence.

Lot’s go back and look down from the top again; here is a picture of the distant minicolumns, each is surrounded by a circle that shows the range of possible influence of these output axons.

 ![Mutual%20Links](https://canada1.discourse-cdn.com/flex030/uploads/numenta/original/2X/2/22ad29870771e35006445189985b58240a3eae88.png)

The red circle is the mini-columns that are sensing some pattern. The highlighted lines are the axonal outputs that happen to be mutual reinforcing. **What I have been calling links**

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