Influence of visual information in postural control: Impact of the used stabilometric analysis methods

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Abstract

Introduction: This study aimed to investigate the postural control performance and the contribution of the sensorial systems during upright standing posture through an integrated analysis of the center-of-pressure (CoP) oscillations with time and frequency domain methods. Material and Methods: Volunteers remained on upright standing upon a piezoelectric force platform at two conditions: eyes closed (EC) and eyes opened (EO). Coordinates of the body's CoP were analyzed to obtain stabilometric parameters in the time (anteroposterior (AP) and medial-lateral (ML) amplitude displacement of the CoP) and in the frequency domain (contribution of spectral bands sub 0.3Hz and 1-3Hz). The time-domain parameters inform a postural control performance, while the spectral parameters inform sensorial strategies to ensure a satisfactory postural stability. Results: Time-domain parameters were not significantly different between conditions, while the contribution of Sub 0.3Hz band was higher in EO condition, as well as, the contribution of 1-3Hz band was higher in the EC. Discussion: Our results pave the way for further studies using stabilometric parameters in the time and frequency domain together. Using this integrated approach, it was possible to identify a reweighting from the available sensory cues, since the Sub 0.3Hz band depends on the visual and vestibular input, while 1-3Hz band depends on the proprioceptive input, ensuring a good postural stability even with the visual-deprivation.

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Author Biographies

Uanderson Silva Pirôpo, State University of Southwest Bahia

Department of Biological Sciences

José Alberto dos Santos Rocha, State University of Southwest Bahia

Department of Biological Sciences

Rafael da Silva Passos, State University of Southwest Bahia

Department of Biological Sciences

David Lomanto Couto, State University of Southwest Bahia

Department of Biological Sciences

Alice Miranda dos Santos, State University of Southwest Bahia

Department of Biological Sciences

Ana Maria Barbosa Argolo, State University of Southwest Bahia

Department of Biological Sciences

Rafael Pereira, State University of Southwest Bahia

Department of Biological Sciences

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Published

2016-12-30

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Original Research

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