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Use of additional sensorial information in postural control of individuals after cerebrovascular accident

Abstract

The maintenance of upright posture, assured by an adequate functioning of the postural control system, is crucial for performing a large variety of motor actions. Therefore, the central nervous system utilizes and integrates stimulus provided by the visual, vestibular e somatosensory systems to obtain accurate information of body position and orientation in space and generates proper motor actions to maintain the balance in upright stance. Problems with the maintenance of this posture, demonstrated by an increased body sway and asymmetry of the weight distribution between lower limbs, have been observed in individuals who suffered a cerebrovascular accident (CVA), in particular when the lesion occurs at the right brain hemisphere. Such problems could be related to the increased number of falls and, consequently, to the lack of independence in performing daily living activities observed in this population. The light touch of index fingertip with a rigid surface as a source of additional somatosensory information has shown to be efficient in reducing body sway in individuals with or without several pathologies. However, it has not been investigated whether stroke survivors could use such additional somatosensory information to improve their balance. Therefore, the aim of the present study is to verify if individuals with CVA use the additional sensory information, obtained by the light touch, to reduce body sway and asymmetry weight bearing. In addition, it will be investigated if the use of additional information depends on the brain hemisphere affected by the CVA. Hence, we will seek for better understanding about how the postural control system uses the additional sensory information to maintain the upright posture and how the side of the brain lesion affects the postural control in CVA. (AU)

Scientific publications (7)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
GARBUS, RAFAELA B. S. C.; ALOUCHE, SANDRA R.; PRADO-RICO, JANINA M.; AQUINO, CAMILA M.; FREITAS, SANDRA M. S. F. From One to Two: Can Visual Feedback Improve the Light Touch Effects on Postural Sway?. JOURNAL OF MOTOR BEHAVIOR, v. 51, n. 5, p. 532-539, SEP 3 2019. Web of Science Citations: 0.
DOS SANTOS, DANIEL GONCALVES; PRADO-RICO, JANINA MANZIERI; ALOUCHE, SANDRA REGINA; DE SOUZA COSTA GARBUS, RAFAELA BARROSO; DE FREITAS, PAULO BARBOSA; SBEGHEN FERREIRA DE FREITAS, SANDRA MARIA. Combined effects of the light touch and cognitive task affect the components of postural sway. Neuroscience Letters, v. 703, p. 99-103, JUN 11 2019. Web of Science Citations: 2.
PRADO-RICO, JANINA MANZIERI; ALOUCHE, SANDRA REGINA; SODRE, ARIANI CARDOSO; DE SOUZA COSTA GARBUS, RAFAELA BARROSO; SBEGHEN FERREIRA DE FREITAS, SANDRA MARIA. Effect of force magnitude of touch on the components of postural sway. GAIT & POSTURE, v. 65, p. 15-19, SEP 2018. Web of Science Citations: 3.
BALDAN, A. M. S.; ALOUCHE, S. R.; ARAUJO, I. M. G.; FREITAS, S. M. S. F. Effect of light touch on postural sway in individuals with balance problems: A systematic review. GAIT & POSTURE, v. 40, n. 1, p. 1-10, MAY 2014. Web of Science Citations: 28.
IARA MONT'ALVÃO GUEDES DE ARAÚJO; SANDRA REGINA ALOUCHE; BIANCA PINTO CUNHA; SANDRA MARIA SBEGHEN FERREIRA DE FREITAS. Uso da informação somatossensorial adicional no controle postural: efeito da dominância manual. Revista Paulista de Educação Física, v. 27, n. 2, p. 305-313, Jun. 2013.
IARA MONT'ALVÃO GUEDES DE ARAÚJO; SANDRA REGINA ALOUCHE; BIANCA PINTO CUNHA; SANDRA MARIA SBEGHEN FERREIRA DE FREITAS. Uso da informação somatossensorial adicional no controle postural: efeito da dominância manual. Revista Paulista de Educação Física, n. ahead, p. 0-0, 2013.
CUNHA, B. P.; ALOUCHE, S. R.; ARAUJO, I. M. G.; FREITAS, S. M. S. F. Individuals with post-stroke hemiparesis are able to use additional sensory information to reduce postural sway. Neuroscience Letters, v. 513, n. 1, p. 6-11, MAR 28 2012. Web of Science Citations: 24.

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