a nerve 'impulse' [=a wave of electrical energy that is carried through the nerves to the brain]
Shopping with a credit card can lead to 'impulse buying'.
He had to resist the 'impulse' [='urge'] 'to shout'.
(..) - All right, Kurt, be nice. Oh, I am being nice. Right, little buddy? - Kurt. - Okay. I understand your impulse to try to physically intimidate me. I mean, you can't compete with me on an intellectual level so you're driven to animalistic puffery. You calling me a puffy animal? (..)2007 TvShow: The Big Bang Theory Title: The Middle Earth Paradigm Season: 1 Episode 6