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 am relieved. - Thank you, sir. - Congratulations, captain. Your father would be proud of you. Thrusters on full. Firing thrusters and impulse engines at your command, sir. Weapon systems and shields on standby. Dock control reports ready, captain. (..)2009 Star Trek
(..) I know you will simply ignore it. See? We are getting to know each other. Prepare the drill. All stop in ... ... . Give me / impulse burst for seconds. I'll do the rest with thrusters. On my mark. Aye. Fire. (..)2009 Star Trek