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Thomas, Neil M.; Bampouras, Theodoros M.; Donovan, Tim; Dewhurst, Susan (2016)
Publisher: Frontiers Media S.A.
Journal: Frontiers in Aging Neuroscience
Languages: English
Types: Article
Subjects: Neurosciences. Biological psychiatry. Neuropsychiatry, Z722, elderly, RC321-571, Neuroscience, gaze accuracy, balance, eye tracking, visual input, smooth pursuit, Original Research, saccadic

Classified by OpenAIRE into

mesheuropmc: genetic structures, eye diseases
Visual information is used for postural stabilization in humans. However, little is known about how eye movements prevalent in everyday life interact with the postural control system in older individuals. Therefore, the present study assessed the effects of stationary gaze fixations, smooth pursuits, and saccadic eye movements, with combinations of absent, fixed and oscillating large-field visual backgrounds to generate different forms of retinal flow, on postural control in healthy young and older females. Participants were presented with computer generated visual stimuli, whilst postural sway and gaze fixations were simultaneously assessed with a force platform and eye tracking equipment, respectively. The results showed that fixed backgrounds and stationary gaze fixations attenuated postural sway. In contrast, oscillating backgrounds and smooth pursuits increased postural sway. There were no differences regarding saccades. There were also no differences in postural sway or gaze errors between age groups in any visual condition. The stabilizing effect of the fixed visual stimuli show how retinal flow and extraocular factors guide postural adjustments. The destabilizing effect of oscillating visual backgrounds and smooth pursuits may be related to more challenging conditions for determining body shifts from retinal flow, and more complex extraocular signals, respectively. Because the older participants matched the young group's performance in all conditions, decreases of posture and gaze control during stance may not be a direct consequence of healthy aging. Further research examining extraocular and retinal mechanisms of balance control and the effects of eye movements, during locomotion, is needed to better inform fall prevention interventions.
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

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