Characteristics of Body Sway during Saccadic Eye Movement in Patients with Peripheral Vestibular Disorders

Kikukawa, Masato; Taguchi, K

doi:10.1159/000410351

Cited by 7 publications

(8 citation statements)

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“…For these reasons, and because we were interested in relations between postural control and eye movements, per se, in this study we used motion stimuli that typically elicit eye movements without head rotation. Kikukawa and Taguchi (1985) also found that body sway was decreased during viewing of a moving visual target (this appeared to be true for healthy participants, but not for a group of participants with peripheral vestibular disorders). The reduction in sway appeared to be concentrated in the medio-lateral (ML) sway axis.…”

Section: Eye Movements and Body Swaymentioning

confidence: 88%

Postural Stabilization of Visually Guided Eye Movements

Stoffregen¹,

Bardy²,

Bonnet³

et al. 2006

Ecological Psychology

109

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We studied relations between eye movements and postural control. In two experiments, participants were asked to shift gaze to follow horizontal oscillation of visual targets. Postural sway variability was reduced during target oscillation, relative to sway with a stationary target. Target displacement amplitude was within the range that normally does not elicit head rotation, and measured head rotation did not increase during target motion. Eye movements made when the eyes were closed did not yield a reduction in body sway (relative to sway when the closed eyes were stationary). The amplitude and frequency of eye movements matched the amplitude and frequency of target motion. The results undermine the view that eye movements and postural control compete for limited central processing resources, and document a functional integration of postural control with visual performance.Tasks or behavioral goals that are superordinate to the control of posture may be termed suprapostural tasks (Stoffregen,

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Section: Eye Movements and Body Swaymentioning

confidence: 88%

Postural Stabilization of Visually Guided Eye Movements

Stoffregen¹,

Bardy²,

Bonnet³

et al. 2006

Ecological Psychology

109

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“…In particular, the possible influence of eye movement on the visual stabilisation of posture should be taken into account. Although some authors have reported a stabilising effect of voluntary eye saccades on postural control [33,34], others merely emphasised the absence of a destabilising effect as long as the frequency of the horizontal saccades is lower than 0.5 Hz and the amplitude smaller than 20-30° [ 35]. White et al [36] reported that, in contrast with externally induced retinal image motion, similar image motion due to voluntary saccadic eye movements does not easily affect postural control even while standing on one foot.…”

Section: Discussionmentioning

confidence: 99%

Postural control and cognitive task performance in healthy participants while balancing on different support-surface configurations

et al. 2001

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Postural control during normal upright stance in humans is a well-learned task. Hence, it has often been argued that it requires very little attention. However, many studies have recently shown that postural control is modified when a cognitive task is executed simultaneously especially in the elderly and in the presence of pathology. This study examined postural control modifications when a cognitive task of varying difficulty levels is added. Postural stance difficulty was also varied. Results from this study suggest that a generalized capacity interference may occur due to the larger interference found with the addition of a cognitive task in the more novel and difficult postural task. Because the performance of the cognitive task was tapered by a speed-difficulty trade-off, it was not possible to determine whether a change in the level of difficulty of the cognitive task occurred and if it would produce larger dual-task interference.

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“…Research on the impact of gaze shifts on postural control has shown that body or head or torso sway either decreases [ 1 , 4 , 5 , 9 , 11 – 18 , 20 ] or remains unchanged [ 2 , 3 , 6 , 12 , 19 ] when single-step saccades are produced against a static background compared to when subjects maintain fixation on a static central visual stimulus. Our results with a static background agree somewhat with those who found that sway remains unchanged when saccades are produced ( Fig 4 ; ST vs oculomotor tasks).…”

Section: Discussionmentioning

confidence: 99%

“…head or torso sway [ 1 – 5 ] and body sway [ 2 , 3 , 5 – 19 ], the results can nevertheless be grouped into mainly two categories. Some found that saccadic eye movements have no effect on posture [ 2 , 3 , 12 , 14 , 19 ], while others reported decreases in sway [ 1 , 4 , 5 , 9 , 11 – 18 , 20 ].…”

Section: Introductionmentioning

confidence: 99%

Interaction between the oculomotor and postural systems during a dual-task: Compensatory reductions in head sway following visually-induced postural perturbations promote the production of accurate double-step saccades in standing human adults

2017

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Humans routinely scan their environment for useful information using saccadic eye movements and/or coordinated movements of the eyes and other body segments such the head and the torso. Most previous eye movement studies were conducted with seated subject and showed that single saccades and sequences of saccades (e.g. double-step saccades) made to briefly flashed stimuli were equally accurate and precise. As one can easily appreciate, most gaze shifts performed daily by a given person are not produced from a seated position, but rather from a standing position either as subjects perform an action from an upright stance or as they walk from one place to another. In the experiments presented here, we developed a new dual-task paradigm in order to study the interaction between the gaze control system and the postural system. Healthy adults (n = 12) were required to both maintain balance and produce accurate single-step and double-step eye saccades from a standing position. Visually-induced changes in head sway were evoked using wide-field background stimuli that either moved in the mediolateral direction or in the anteroposterior direction. We found that, as in the seated condition, single- and double-step saccades were very precise and accurate when made from a standing position, but that a tighter control of head sway was necessary in the more complex double-step saccades condition for equivalent results to be obtained. Our perturbation results support the “common goal” hypothesis that state that if necessary, as was the case during the more complex oculomotor task, context-dependent modulations of the postural system can be triggered to reduced instability and therefore support the accomplishment of a suprapostural goal.

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Characteristics of Body Sway during Saccadic Eye Movement in Patients with Peripheral Vestibular Disorders

Cited by 7 publications

References 0 publications

Postural Stabilization of Visually Guided Eye Movements

Postural Stabilization of Visually Guided Eye Movements

Postural control and cognitive task performance in healthy participants while balancing on different support-surface configurations

Interaction between the oculomotor and postural systems during a dual-task: Compensatory reductions in head sway following visually-induced postural perturbations promote the production of accurate double-step saccades in standing human adults

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