This refers to systemsThis is a very generic term for any collection of components that, all together, can do something. Systems can be built from subsystems. Examples are your cell phone; your computer; the radio in your car; anything that seems like a "whole." that attempt to operate in the same way that the brain operates. Spiking neural networksAn approach to neuromorphic machine learning that attempts to mimic how the brain (or parts of the brain) works. are the main commercial example.