To jolt someone is to disturb them or make them jump. A jolt is sudden and jarring.
Jolting disturbs or surprises people. If you surprise someone and they jump up a little, you jolted them. Alarm clocks jolt people out of sleep. A sudden crack of thunder could provide a jolt. The unexpected barking of a dog could jolt you. Jolting is quick and not very pleasant. A jolt jars and stuns you. Some jolts are more serious: crashing your car jolts the people in the car violently.