Could this be what the brain is doing? A group of neurons get excited (some concept or thought), and a distributed spatial search happens electrically starting at the source of excitation (literally brainstorming), until it finds the best pathway to connect to "ground" (reasoning), at which point the pathways between "source" and "ground" stay continuously excited for a measurable period of time (the ephiphany moment, learning is happening via hebbian). "Ground" is whatever that causes the source energy to drain, such as the epiphany of a solution, which makes the solution appear obvious.