Neural construction matrix
This resource is encountered for the first time in the warp tunnel towards Apex, fourth region.
It does not grant any special ability inside the tunnel but it is nevertheless very important. For most regions, you will need to pay a certain amount of this to respawn there. If you cannot pay, you will be moved to Apex after death.
If you can afford it, you can also pay an even higher amount of this resource to quickly travel to one of the regions you already visited. You can do this in the Galactic Map.
Current stocks are visible in the inventory.
Check out this introductory video (youtube video)