Sensory information utilization and time delays characterize motor developmental pathology in infant sitting postural control

Joan E. Deffeyes, Regina T. Harbourne, Wayne Allan Stuberg, Nicholas Stergiou

Research output: Contribution to journalArticle

2 Scopus citations


Sitting is one of the first developmental milestones that an infant achieves. Thus measurements of sitting posture present an opportunity to assess sensorimotor development at a young age. Sitting postural sway data were collected using a force plate, and the data were used to train a neural network controller of a model of sitting posture. The trained networks were then probed for sensitivity to position, velocity, and acceleration information at various time delays. Infants with typical development developed a higher reliance on velocity information in control in the anterior-posterior axis, and used more types of information in control in the medial-lateral axis. Infants with delayed development, where the developmental delay was due to cerebral palsy for most of the infants in the study, did not develop this reliance on velocity information, and had less reliance on short latency control mechanisms compared with infants with typical development.

Original languageEnglish (US)
Pages (from-to)302-317
Number of pages16
JournalMotor Control
Issue number2
Publication statusPublished - Apr 2011



  • Artificial neural network
  • Cerebral palsy
  • Developmental delay
  • Infant
  • Postural sway
  • Sitting

ASJC Scopus subject areas

  • Physical Therapy, Sports Therapy and Rehabilitation
  • Clinical Neurology
  • Physiology (medical)

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