How is that not a neural network? This system is basically exploiting the property of action potential propagation down the axon to capture relative timing diff

How is that not a neural network? This system is basically exploiting the property of action potential propagation down the axon to capture relative timing differences. As an aside, there are a number of useful properties seen in biological neural networks that aren't yet incorporated into multi-layer perceptrons. E.g. short-term plasticity, axonal delays, spiking neurons, etc. I expect that some of these will find their way into the MLP formulation when we can figure out an effective mathematical way of doing so.