Using kinematic analyses to explore sensorimotor control impairments in children with 22q11.2 deletion syndrome

Adam C Cunningham1, Liam Hill2, Mark Mon-Williams2

  • 1MRC Centre for Neuropsychiatric Genetics and Genomics, Division of Psychological Medicine and Clinical Neurosciences, Cardiff University School of Medicine, Haydn Ellis Building, Maindy Road, Cathays, Cardiff, CF24 4HQ, UK. CunninghamAC@cardiff.ac.uk.

Insights

Children with 22q11.2 deletion syndrome (22q11.2DS) exhibit significant sensorimotor control deficits. These coordination impairments are largely independent of intellectual disability and psychopathology commonly seen in 22q11.2DS.

Area of Science:

  • Neuroscience
  • Developmental Psychology
  • Genetics

Background:

  • 22q11.2 deletion syndrome (22q11.2DS) is linked to various developmental issues, including behavioral and intellectual impairments.
  • Emerging evidence suggests that impaired coordination skills may also be a characteristic feature of 22q11.2DS.
  • This study investigates sensorimotor control in children with 22q11.2DS.

Purpose of the Study:

  • To characterize sensorimotor control abilities in children with 22q11.2 deletion syndrome (22q11.2DS).
  • To explore the relationship between sensorimotor deficits and co-occurring intellectual disability (IQ) and psychopathology in 22q11.2DS.
  • To identify specific visuo-manual coordination challenges in this population.

Main Methods:

  • Kinematic analysis of hand movements during visuo-manual coordination tasks (tracking, aiming, steering) in 54 children with 22q11.2DS and 24 controls.
  • Standardized assessments of full-scale IQ (FSIQ), ADHD, ASD, and anxiety disorder symptomatology.
  • Comparison of movement quality descriptors between the 22q11.2DS group and unaffected siblings.

Main Results:

  • Children with 22q11.2DS demonstrated significant deficits in seven out of eight kinematic descriptors of movement quality across tasks.
  • The degree of impairment in only three kinematic descriptors was significantly associated with FSIQ after controlling for multiple testing.
  • Visuo-manual tracking errors showed a nominal association with ADHD symptom counts.

Conclusions:

  • Children with 22q11.2DS exhibit widespread sensorimotor control impairments on visuo-manual tasks.
  • The severity of these sensorimotor deficits is largely independent of the degree of intellectual and psychopathological impairments in 22q11.2DS.
  • Sensorimotor assessment may offer unique insights into the phenotype of 22q11.2DS beyond cognitive and behavioral measures.
Abstract

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