One of the Neuron's data-carrying operating principles is diffusion of molecules in molecules via Brownian motion. Diffusion can be seen by dropping food coloring in water: without the net expenditure of energy, the 1/0 bit of information in a context (kind of molecule) can "be carried" by brownian motion from from point A to point B, inside the neuron and both sides can be relatively sure that the message will be both delivered, and when received the data received can be known to be from a known target. There's more fascinating detail on how the target can then respond to the source and use that to triangulate into which of the six cardinal directions I need to flagellate the oars on the end of my dendrites to unhinge, paddle toward where it needs to be, then connect and check if it's right. My point is that diffusion in this way in molecules is a data-carrying methodology that technically takes no net expenditure of energy. This is one of the many ways the brain is so energy efficient relative to how much yotta flops of compute you're getting out of it.
https://www.youtube.com/watch?v=uV4FkbrAj-gTurns out that neurons have about 10 to 100 billion atoms in them, which gives you plenty of space for a fully featured N layer neural net to be happening inside the body of the neuron, and also the chirps, tones, strobes, crescendos and pulses of every variation going up and down the lines in your head are merely highways of alignment systems and now where the sausage of intelligence is getting isolated.
https://www.youtube.com/watch?v=hmtQPrH-gC4 