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Saccades improve postural control: a developmental study in normal children

Ajrezo, Layla ; Wiener-Vacher, Sylvette ; Bucci, Maria Pia Balasubramaniam, Ramesh

PloS one, 2013-11, Vol.8 (11), p.e81066-e81066 [Periódico revisado por pares]

United States: Public Library of Science

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Título:
Saccades improve postural control: a developmental study in normal children
Autor: Ajrezo, Layla ; Wiener-Vacher, Sylvette ; Bucci, Maria Pia
Balasubramaniam, Ramesh
Assuntos: Abnormalities ; Adolescent ; Adults ; Age ; Analysis ; Analysis of Variance ; Ankle ; Center of pressure ; Child ; Child, Preschool ; Children ; Correlation analysis ; Eye ; Eye Movements ; Female ; Fixation ; Force plates ; Humans ; Hypotheses ; Latency ; Life Sciences ; Male ; Neural networks ; Neurons and Cognition ; Oculomotor system ; Posture ; Psychomotor Performance - physiology ; Saccades ; Saccades (Eye movements) ; Saccadic eye movements ; Stability ; Vestibular system
É parte de: PloS one, 2013-11, Vol.8 (11), p.e81066-e81066
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Conceived and designed the experiments: MPB SWV. Performed the experiments: LA MPB. Analyzed the data: LA. Contributed reagents/materials/analysis tools: MPB SWV. Wrote the paper: LA MPB SWV.
Competing Interests: The authors have declared that no competing interests exist.
Descrição: Dual-task performance is known to affect postural stability in children. This study focused on the effect of oculomotor tasks like saccadic eye movements on postural stability, studied in a large population of children by recording simultaneously their eye movements and posture. Ninety-five healthy children from 5.8 to 17.6 years old were examined. All children were free of any vestibular, neurological, ophtalmologic and orthoptic abnormalities. Postural control was measured with a force platform TechnoConcept®, and eye movements with video oculography (MobilEBT®). Children performed two oculomotor tasks: fixation of a stable central target and horizontal saccades. We measured the saccade latency and the number of saccades during fixation as well as the surface, length and mean velocity of the center of pressure. During postural measurement, we observed a correlation between the age on the one hand and a decrease in saccade latency as well as an improvement in the quality of fixation on the other. Postural sway decreases with age and is reduced in the dual task (saccades) in comparison with a simple task of fixation. These results suggest a maturation of neural circuits controlling posture and eye movements during childhood. This study also shows the presence of an interaction between the oculomotor system and the postural system. Engaging in oculomotor tasks results in a reduction of postural sway.
Editor: United States: Public Library of Science
Idioma: Inglês

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Saccades improve postural control: a developmental study in normal children

Ajrezo, Layla ; Wiener-Vacher, Sylvette ; Bucci, Maria Pia Balasubramaniam, Ramesh

United States: Public Library of Science

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