I know it's early stuff, and I am not an expert on this by any means, but I wonder if any of this would be something applicable to a biological means for "backp

I know it's early stuff, and I am not an expert on this by any means, but I wonder if any of this would be something applicable to a biological means for "backpropagation"? Just to clarify: As far as I am aware, there hasn't been any biological equivalent for neural learning akin to what is called "backpropagation" as used by common implementations of artificial neural networks in order to learn and generalize a task or function. That there has only been a "forward signal" from neuron to neuron observed, with no way for error signals to move "backwards" adjusting the "connection weights" of biological neurons (note: this is not how biological neurons work at all; that much I do know - I am just simplifying a bit here). Could this new communication form potentially be used for such error propagation for learning? I know the article seemed to make the idea that it only happens in "slow waves" and during "sleep"; but I wonder if it isn't actually happening all the time...? Well - now I am just speculating on a subject I have little to no knowledge in, so I will stop here.