Impaired anticipatory vision and visuomotor coordination affects action planning and execution in children with hemiplegic cerebral palsy

Swati M. Surkar, Rashelle M. Hoffman, Brenda Davies, Regina Harbourne, Max J. Kurz

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

Background: Action-planning and execution deficits in children with hemiplegic cerebral palsy (HCP) are potentially due to deficits in the integration of sensory information, such as vision, with motor output. Aims: To determine differences in anticipatory visual patterns in children with HCP compared to typically developing (TD) children, and to assess visuomotor coordination in children with HCP. Methods and procedures: We included 13 children with HCP (Age = 6.8 + 2.9 yrs) and 15 TD children (Age = 5.8 + 1.1 yrs). The experimental task used in this study is a valid action-planning task, which consisted of initially reaching and grasping an object placed at a fixed position, followed by placing the object in a random target position. Visual patterns were recorded using a head-mounted eye-tracker system and arm movements were recorded using motion capture (120 Hz). Outcomes and results: Children with HCP had delayed anticipatory gaze time and longer latency than TD children during the planning and execution phases. Children with HCP also had a higher frequency of gaze shifts, longer reaction times (RT) and movement times (MT) than TD children. Conclusions and implications: Children with HCP may have deficits in anticipatory vision, which potentially affected planning and executing a goal-directed action. Therapeutic interventions focusing on improving visuomotor coordination may improve the motor performance in children with HCP.

Original languageEnglish (US)
Pages (from-to)64-73
Number of pages10
JournalResearch in Developmental Disabilities
Volume80
DOIs
StatePublished - Sep 2018

Keywords

  • Action execution
  • Action planning
  • Eye-hand coordination
  • Goal-directed action
  • Movement onset asynchrony
  • Reaching
  • Vision

ASJC Scopus subject areas

  • Developmental and Educational Psychology
  • Clinical Psychology

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