Multisensory reweighting in children with dyslexia: behavior and mechanisms

• Grant number: 13/25653-7
• Support type: Scholarships in Brazil - Doctorate
• Effective date (Start): March 01, 2014
• Effective date (End): April 30, 2018
• Field of knowledge: Health Sciences - Physical Education
• Principal Investigator: José Angelo Barela
• Grantee: Milena Razuk
• Home Institution: Pró-Reitoria de Pós-Graduação e Pesquisa. Universidade Cruzeiro do Sul (UNICSUL). São Paulo , SP, Brazil
• Associated scholarship(s): 16/05602-7 - Effect of different visual tasks in postural control in dyslexic children: eye movement analysis, BE.EP.DR

Abstract

Children with dyslexia, besides showing reading and writing difficulties, also show poor performance in postural control. Recently, we have suggested that children with dyslexia would show changes in how sensory information is coupled to body sway, mainly due to the system`s ability to give importance or different weights to sensory stimuli from different sources, characterizing a possible explanation for this deterioration in postural performance. Therefore, the aim of this study is to evaluate how the dynamic process of sensory reweighting of multiple sensory sources in postural control occurs in children with dyslexia. Thirty children with dyslexia and thirty children without dyslexia, 10 years-old, will participate in three experiments. In the first experiment, we will investigate whether children with dyslexia modulate body sway as a function of performing a reading task similarly to children without dyslexia. In experiments two and three, a moving room and moving touch bar will be used, simultaneously, manipulating sensory stimuli from visual and somatosensory channels, respectively. In the second experiment, we will exam the mechanism of sensorimotor reweighting resultant of changes in visual and somatosensory stimuli independently (intra-modality reweighting). Finally, in the third experiment, we will exam the mechanism of sensorimotor reweighting resultant of changes in visual and somatosensory stimuli simultaneously (inter-modality reweighting). (AU)

Scientific publications

(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)

RAZUK, MILENA; LUKASOVA, KATERINA; BUCCI, MARIA PIA; BARELA, JOSE A. Dyslexic children need more robust information to resolve conflicting sensory situations. DYSLEXIA, v. 26, n. 1, p. 52-66, FEB 2020. Web of Science Citations: 0.

RAZUK, MILENA; PERRIN-FIEVEZ, FAUSTINE; GERARD, CHRISTOPHE LOIC; PEYRE, HUGO; BARELA, JOSE ANGELO; BUCCI, MARIA PIA. Effect of colored filters on reading capabilities in dyslexic children. RESEARCH IN DEVELOPMENTAL DISABILITIES, v. 83, p. 1-7, DEC 2018. Web of Science Citations: 2.

RAZUK, MILENA; BARELA, JOSE ANGELO; PEYRE, HUGO; GERARD, CHRISTOPHE LOIC; BUCCI, MARIA PIA. Eye movements and postural control in dyslexic children performing different visual tasks. PLoS One, v. 13, n. 5 MAY 24 2018. Web of Science Citations: 2.