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'.
(..) I designed her. I can arrange a more personal milieu. The digital pimp hard at work. Pay no attention to these hypocrites, Neo. To deny our own impulses ... ... is to deny the very thing that makes us human. Dozer, when you're done ... ... bring the ship up to broadcast depth. We're going in. (..)1999 The Matrix