Seat device for vehicle

A vehicle seat device comprising a seat main body provided with a seat cushion and a seat back connected to a rear part of the seat cushion so as to be able to change a tilt angle thereof about a horizontal axis, wherein the vehicle seat device further comprises:

• a plurality of vibration generators provided in the seat cushion and the seat back and configured to apply a vibrational stimulus to a seated occupant;
• a tilt angle detection unit for detecting the tilt angle of the seat back relative to the seat cushion;
• a behavior detection unit for detecting a behavior of the vehicle;
• and
• a control unit configured to receive the tilt angle detected by the tilt angle detection unit and the behavior of the vehicle detected by the behavior detection unit, and activate the vibration generators of the seat cushion and the seat back when the vehicle behavior that is received meets a prescribed behavior criterion in such a manner that the vibration generators of the seat cushion vibrate with a greater intensity than the vibration generators of the seat back when the tilt angle is less than a predetermined value, and the vibration generators of the seat back vibrate with a greater intensity than the vibration generators of the seat cushion when the tilt angle is equal to or greater than the predetermined value.