# Layer 4 Long Range Connections

**URL:** <https://discourse.numenta.org/t/layer-4-long-range-connections/4021>\
**Category:** General Neuroscience\
**Created:** [June 13, 2018, 12:05pm UTC](https://discourse.numenta.org/t/layer-4-long-range-connections/4021 "2018-06-13T12:05:52Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Casey](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.numenta.org/casey/32/2874_2.png) [@Casey](https://discourse.numenta.org/u/Casey)\
**Post date:** [June 13, 2018, 12:05pm UTC](https://discourse.numenta.org/t/layer-4-long-range-connections/4021/1 "2018-06-13T12:05:52Z")

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> **[Brain scientists identify 'cross talk' between neurons that control touch in...](https://www.sciencedaily.com/releases/2018/05/180529132054.htm)**
>
> Scientists report they have uncovered a previously overlooked connection between neurons in two distinct areas of the mammalian brain. The neurons, they say, control the sense of touch, and their experiments in mice offer insights into mapping brain...

  
S2 L4 cells send axons to S1 L4, and this improves selectivity for whisker deflection direction (orientation). So maybe L4 actually has a small number of inter-regional inputs because it is an output layer, so it doesn’t need many inputs to resolve ambiguity.