A moveable headrest is mounted on or with respect to a support for
supporting a user in viewing images in a standing, seated, or reclining
posture. The headrest is for supporting the head of the user in executing
head movements with a changing direction-of-view. A display mounted with
respect to the user's head provides the images. An actuator can be
provided for moving the moveable headrest for a passive user. A sensor
can be provided for sensing movements of the moveable headrest, i.e., for
sensing said movements from a changing direction. The moveable headrest
apparatus may include either or both the actuator and the sensor.