The purpose of this study was to clarify the role of the vestibular system in @entity1 locomotion. The subjects were nine healthy controls, nine @entity1 with @entity394 ( @entity394 ) and nine @entity1 with @entity388 ( @entity388 ). The @entity394 subjects were M  ni  re's disease @entity1 who were being treated with administration of @entity801 into the tympanic cavity. @entity388 subjects were @entity393 individuals who showed no response to the ice-water caloric test. A total of 13 markers were attached to the head, trunk (C7), hip and foot in order to measure translational and rotational motions with the aid of a video image processing system. All subjects were instructed to restrict their stride length to approximately 80 cm while walking on a treadmill and watching a visual target. However, walking speed varied depending on the ability of the subject to maintain body equilibrium. The results showed that walking speed and step frequency were significantly lower for the @entity394 and @entity388 groups than for the normal group. Analysis of head movements in the sagittal plane showed a counteracting motion between pitch rotations and vertical translation as previously reported. We also found head counteracting motions between @entity717 and lateral translation in the horizontal plane. These mechanisms are thought to help stabilize the gaze during walking. When the head fixation point was calculated by projecting the naso-occipital axis line during walking, the head counteracting motion was found to assist the vestibulo-ocular reflex in stabilizing the gaze. In addition, normal subjects seemed to use head stabilization as a space strategy in order to minimize head yaw movement. In contrast, @entity394 and @entity388 subjects adopted head stabilization as a trunk strategy.

Three-dimensional analysis of @entity1 locomotion in normal subjects and XXXX with @entity394 .

@entity1 :: ('9606', 'Species') :: ['human', 'patients'] @entity801 :: ('MESH:D005839', 'Chemical') :: ['gentamicin'] @entity388 :: ('MESH:D020338', 'Disease') :: ['BVD', 'bilateral vestibular deficiency'] @entity717 :: ('MESH:D009069', 'Disease') :: ['yaw rotation'] @entity393 :: ('MESH:D034381', 'Disease') :: ['hearing-impaired'] @entity394 :: ('MESH:D015837', 'Disease') :: ['unilateral vestibular deficiency', 'UVD']
@entity1 :: (9606,Species) :: ['patients']
