It Also happens in the Game!!!
Na'vi usage Edit
In all honesty, I'd be surprised if the Na'vi were used to doing this sort of thing... most likely this was a technique developed by the humans, adapting the known abilities of the Queue and the nueral-receptor trees. The Avatar Program probably theorised that these links could be used to transfer conciousness in the same way as their links to the Avatar bodies (probably because said links were based on the Tree's receptors). Should we add something about this, bearing in mind that this is still conjectural?