NDLI: The role of central vision in posture: Postural sway adaptations in Stargardt patients.

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The role of central vision in posture: Postural sway adaptations in Stargardt patients.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Agostini, Valentina Sbrollini, Agnese Cavallini, Chanda Busso, Alessandra Pignata, Giulia Knaflitz, Marco
Description	Author Affiliation: Agostini V ( Dipartimento di Elettronica e Telecomunicazioni, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy. Electronic address: valentina.agostini@polito.it.); Sbrollini A ( Dipartimento di Elettronica e Telecomunicazioni, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy.); Cavallini C ( Clinica C. Sperino, Ospedale Oftalmico di Torino, Via Juvarra 19, 10122 Torino, Italy.); Busso A ( Clinica C. Sperino, Ospedale Oftalmico di Torino, Via Juvarra 19, 10122 Torino, Italy.); Pignata G ( Clinica C. Sperino, Ospedale Oftalmico di Torino, Via Juvarra 19, 10122 Torino, Italy.); Knaflitz M ( Dipartimento di Elettronica e Telecomunicazioni, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy.)
Abstract	The role of central and peripheral vision in the maintenance of upright stance is debated in literature. Stargardt disease causes visual deficits affecting the central field, but leaving unaltered a patient's peripheral vision. Hence, the study of this rare pathology gives the opportunity to selectively investigate the role of central vision in posture. Postural sway in quiet stance was analyzed in 10 Stargardt patients and 10 control subjects, in three different conditions: (1) eyes closed, (2) eyes open, gazing at a fixed target, and (3) eyes open, tracking a moving target. Stargardt patients outperformed controls in the condition with eyes closed, showing a reduced root mean square (RMS) of the medio-lateral COP displacement, while their performance was not significantly different from controls in the antero-posterior direction. There were no significant differences between patients and controls in open eyes conditions. These results suggest that Stargardt patients adapted to a different visual-somatosensory integration, relying less on vision, especially in the medio-lateral direction. Hence, the central vision seems to affect mostly the medio-lateral direction of postural sway. This finding supports the plausibility of the 'functional sensitivity hypothesis', that assigns complementary roles to central and peripheral vision in the control of posture.
File Format	HTM / HTML
ISSN	09666362
Volume Number	43
e-ISSN	18792219
Journal	Gait & Posture
Language	English
Publisher	Elsevier
Publisher Date	2016-01-01
Publisher Place	Great Britain (UK)
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Adaptation, Physiological Discipline Orthopedics Congenital Humans Male Visual Acuity Journal Article Posture Physiopathology Young Adult Adolescent Visual Perception Adult Female Physiology Rehabilitation Macular Degeneration
Content Type	Text
Resource Type	Article
Subject	Orthopedics and Sports Medicine Rehabilitation Biophysics Sports Science

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