Swati M Surkar1, Rashelle M Hoffman2, Brenda Davies3, Regina Harbourne4, Max J Kurz5. 1. Munroe Meyer Institute of Genetics and Rehabilitation, University of Nebraska Medical Center, Sensorimotor Learning Laboratory, Department of Physical Therapy, 985450 Nebraska Medical Center Omaha, NE, 68198-5450, United States. Electronic address: ssurkar@wustl.edu. 2. Munroe Meyer Institute of Genetics and Rehabilitation, University of Nebraska Medical Center, Sensorimotor Learning Laboratory, Department of Physical Therapy, 985450 Nebraska Medical Center Omaha, NE, 68198-5450, United States. Electronic address: Rashelle.hoffman@unmc.edu. 3. Munroe Meyer Institute of Genetics and Rehabilitation, University of Nebraska Medical Center, Sensorimotor Learning Laboratory, Department of Physical Therapy, 985450 Nebraska Medical Center Omaha, NE, 68198-5450, United States. Electronic address: davies@csp.edu. 4. John G. Rangos School of Health Sciences, Duquesne University, Department of Physical Therapy, 600 Forbes Avenue, Pittsburgh, PA, 15282, United States. Electronic address: harbourner@duq.edu. 5. Munroe Meyer Institute of Genetics and Rehabilitation, University of Nebraska Medical Center, Sensorimotor Learning Laboratory, Department of Physical Therapy, 985450 Nebraska Medical Center Omaha, NE, 68198-5450, United States. Electronic address: mkurz@unmc.edu.
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.
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.
Authors: Michael P Trevarrow; Anna Reelfs; Lauren R Ott; Samantha H Penhale; Brandon J Lew; Jessica Goeller; Tony W Wilson; Max J Kurz Journal: Brain Commun Date: 2022-04-04
Authors: Max J Kurz; Hannah Bergwell; Rachel Spooner; Sarah Baker; Elizabeth Heinrichs-Graham; Tony W Wilson Journal: Ann Clin Transl Neurol Date: 2020-11-11 Impact factor: 5.430