Inside of a braincell, a chemical signal is turned into an electrical one. Between them, they are chemicals, all the NTs and that pot. How much electricity is happening is measured in hz. When you are sleeping, you may be at 1-4hz, normal waking is expected around 10-12hz. ADHD kids don't have the output yet and walk around half "asleep" in Theta waves, 8-10hz.
Emotions are simply the result of metabolizing a neurotransmitter. When you get a shot of ephinephrine, the extra chemical volume will correspond to extra electrical volume (eeg) and metabolites (blood /piss test). There may be a slight uptick in hz when you're swinging punches because electricity moves those arm cells and teeth clenching cells. But there is no particular way to say that a given hz is a given emotion. In fact, "feelings" are generally dismissed by the bio crowd because it doesn't matter. Getting the chemical and walking into a room with complaining customers vs a party means you will react accordingly. I gave you the same shot both times. It's all in your head that these feelings of being riled up are the result of the complaining customer actor.