Oscillatory activity in the brain is widely observed at different levels of organization and is thought to play a key role in processing neural information.
In general, is there a relation between large-scale oscillations and small-scale oscillations? How are the "larger" ones created from "smaller" ones? I think it must relate to coupled oscillations in small-scale, is that correct? Does it behave like the creation - annihilation in quantum mechanics? How would one describe all the large and small ones in one framework?