[Formation of images of spatial position during the development of illusions of vestibular origin].

This paper discusses specific features of pilot's spatial orientation in response to spatial illusions of vestibular origin associated with their recognition and management. Analysis of data in the literature and observations by the present authors allow the conclusion that pilot's spatial orientation, once spatial illusions have emerged, makes him assess not only the instrumental information but also the pattern of his own controlling movements. As a consequence, it is suggested that in relation to the formation of a correct image of spatial position (particularly in the case of spatial illusions) pilot's controlling movements act as part of instrumental information concerning the spatial position of the flying vehicle.