Cognitive demands impair postural control in developmental dyslexia: A negative effect that can be compensated

Vieira, Stéphanie; Quercia, Patrick; Michel, Carine; Pozzo, Thierry; Bonnetblanc, François

doi:10.1016/j.neulet.2009.06.093

Cited by 41 publications

(29 citation statements)

References 23 publications

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“…Larger between-group differences may result from the application of more difficult and complex paradigms, for example those involving sensory modulation [13], perturbation of the consistency of the standing surface [16], or the presence of a secondary, distractor task [44]. Dual task environments in particular have been argued to provide superior paradigms for measuring the ability to automate motor tasks, because the presence of the secondary task requires reallocation of attention resources away from the primary task (for e.g., postural control), resulting in performance decrements and thereby mitigating against ceiling performance.…”

Section: Discussionmentioning

confidence: 99%

Postural Control Is Not Systematically Related to Reading Skills: Implications for the Assessment of Balance as a Risk Factor for Developmental Dyslexia

et al. 2014

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Impaired postural control has been associated with poor reading skills, as well as with lower performance on measures of attention and motor control variables that frequently co-occur with reading difficulties. Measures of balance and motor control have been incorporated into several screening batteries for developmental dyslexia, but it is unclear whether the relationship between such skills and reading manifests as a behavioural continuum across the range of abilities or is restricted to groups of individuals with specific disorder phenotypes. Here were obtained measures of postural control alongside measures of reading, attention and general cognitive skills in a large sample of young adults (n = 100). Postural control was assessed using centre of pressure (CoP) measurements, obtained over 5 different task conditions. Our results indicate an absence of strong statistical relationships between balance measures with either reading, cognitive or attention measures across the sample as a whole.

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Section: Discussionmentioning

confidence: 99%

Postural Control Is Not Systematically Related to Reading Skills: Implications for the Assessment of Balance as a Risk Factor for Developmental Dyslexia

et al. 2014

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Section: Introductionmentioning

confidence: 99%

“…Recent studies [37]–[38] have suggested that dyslexic children have a postural deficiency syndrome constituting an alteration of postural equilibrium accompanied by a deficit affecting proprioceptive and visual information. A cognitive task, such as reading single words, impairs postural stability in dyslexic children [37]. Interestingly, a vibration of the ankle muscles impaired stability more strongly in dyslexic than in non-dyslexic children, independently of the attentional task; in the condition without vibration, the attentional performance of dyslexics was significantly impaired with respect to the non-dyslexic group of children [38].…”

Section: Introductionmentioning

confidence: 99%

Effect of a Dual Task on Postural Control in Dyslexic Children

et al. 2012

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Several studies have examined postural control in dyslexic children; however, their results were inconclusive. This study investigated the effect of a dual task on postural stability in dyslexic children. Eighteen dyslexic children (mean age 10.3±1.2 years) were compared with eighteen non-dyslexic children of similar age. Postural stability was recorded with a platform (TechnoConcept®) while the child, in separate sessions, made reflex horizontal and vertical saccades of 10° of amplitude, and read a text silently. We measured the surface and the mean speed of the center of pressure (CoP). Reading performance was assessed by counting the number of words read during postural measures. Both groups of children were more stable while performing saccades than while reading a text. Furthermore, dyslexic children were significantly more unstable than non-dyslexic children, especially during the reading task. Finally, the number of words read by dyslexic children was significantly lower than that of non-dyslexic children and, in contrast to the non-dyslexic children. In line with the U-shaped non-linear interaction model, we suggest that the attention consumed by the reading task could be responsible for the loss of postural control in both groups of children. The postural instability observed in dyslexic children supports the hypothesis that such children have a lack of integration of multiple sensorimotor inputs.

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“…Stein & Walsh, 1997;Vieira, Quercia, Michel, Pozzo, & Bonnetblanc, 2009) with otherwise normal intellectual functioning and educational opportunities (for a review see Shaywitz, 1998). Several theories have been proposed to account for the various deficits in these numerous functions.…”

mentioning

confidence: 99%

Space representation in children with dyslexia and children without dyslexia: Contribution of line bisection and circle centering tasks

Vieira

Quercia

Bonnetblanc

et al. 2013

Research in Developmental Disabilities

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Cognitive demands impair postural control in developmental dyslexia: A negative effect that can be compensated

Cited by 41 publications

References 23 publications

Postural Control Is Not Systematically Related to Reading Skills: Implications for the Assessment of Balance as a Risk Factor for Developmental Dyslexia

Postural Control Is Not Systematically Related to Reading Skills: Implications for the Assessment of Balance as a Risk Factor for Developmental Dyslexia

Effect of a Dual Task on Postural Control in Dyslexic Children

Space representation in children with dyslexia and children without dyslexia: Contribution of line bisection and circle centering tasks

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