title: Spatial and temporal analysis of postural control in dyslexic children.
abstract: OBJECTIVE
  The aim of this study is to examine postural control of dyslexic children using both spatial and temporal analysis.
  
  
  METHODS
  Thirty dyslexic (mean age 9.7±0.3years) and thirty non-dyslexic age-matched children participated in the study. Postural stability was evaluated using Multitest Equilibre from Framiral®. Posture was recorded in the following conditions: eyes open fixating a target (EO) and eyes closed (EC) on stable (-S-) and unstable (-U-) platforms.
  
  
  RESULTS
  The findings of this study showed poor postural stability in dyslexic children with respect to the non-dyslexic children group, as demonstrated by both spatial and temporal analysis. In both groups of children postural control depends on the condition, and improves when the eyes are open on a stable platform. Dyslexic children have spectral power indices that are higher than in non-dyslexic children and they showed a shorter cancelling time.
  
  
  CONCLUSIONS
  Poor postural control in dyslexic children could be due to a deficit in using sensory information most likely caused by impairment in cerebellar activity.
  
  
  CONCLUSIONS
  The reliability of brain activation patterns, namely in using sensory input and cerebellar activity may explain the deficit in postural control in dyslexic children.
authors.affiliation: UMR 1141 Inserm - Université Paris Diderot. Hôpital Robert Debré, 48 Boulevard Sérurier, 75019 Paris, France. Electronic address: gouleme.nathalie@gmail.com.
authors.forename: Nathalie
authors.initials: N
authors.lastname: Gouleme
authors.affiliation: Service de Psychopathologie de l'enfant et de l'adolescent, 48 Boulevard Sérurier Hôpital Robert Debré, 75019 Paris, France.
authors.forename: Christophe Loic
authors.initials: CL
authors.lastname: Gerard
authors.affiliation: Service d'Ophtalmologie, Hôpital Robert Debré, 48 Boulevard Sérurier, 75019 Paris, France.
authors.forename: Emmanuel
authors.initials: E
authors.lastname: Bui-Quoc
authors.affiliation: UMR 1141 Inserm - Université Paris Diderot. Hôpital Robert Debré, 48 Boulevard Sérurier, 75019 Paris, France.
authors.forename: Maria Pia
authors.initials: MP
authors.lastname: Bucci
mesh_terms: D016022:Case-Control Studies; D002531:Cerebellum / Q000503:physiopathology; D002648:Child; D004410:Dyslexia / Q000503:physiopathology*; D005260:Female; D006801:Humans; D008297:Male; D011187:Posture / Q000502:physiology*; D011597:Psychomotor Performance / Q000502:physiology; D015203:Reproducibility of Results; D062211:Spatio-Temporal Analysis; D014785:Vision, Ocular / Q000502:physiology
keywords: Cerebellum; Children; Dyslexia; Postural control; Sensorial strategy; Wavelet transformation