Abstract: A vehicle seat 10 is disclosed with a seatback frame 18 and an actuator 20 for supporting an occupant. A head restraint 16 extends from the seatback frame 18 for supporting the head of the occupant. The head restraint 16 is movable from a rest position 24 to a deployed position 26. In one embodiment, a two-bar mechanism 22 is housed partially within the head restraint 16. A linkage 30 extends between the mechanism 22 and the actuator 20. When the actuator 20 receives an input force from the occupant in response to an impact, the linkage 30 actuates the head restraint 16 to the deployed position by cooperative movement of the two-bar mechanism 22.