Auditory and visual information do not affect self-paced bilateral finger tapping in children with DCD
Renuka Roche1, Anna Maria Wilms-Floet, Jane E Clark
1Department of Physical Therapy and Rehabilitation Sciences, University of Maryland School of Medicine, Baltimore, MD 21201, United States.
Human Movement Science
|February 23, 2011
Summary
Children with Developmental Coordination Disorder (DCD) exhibit greater variability in finger tapping timing. This study found DCD impacts intrinsic motor control, showing less accuracy and more variability regardless of sensory feedback.
Area of Science:
- Motor control research
- Neurodevelopmental disorders
- Human movement science
Background:
- Developmental Coordination Disorder (DCD) is characterized by motor skill deficits.
- Children with DCD often show difficulties with timing and coordination.
- Understanding intrinsic motor control is crucial for DCD interventions.
Purpose of the Study:
- To investigate intrinsic finger tapping coordination in children with DCD.
- To compare motor timing and variability in children with and without DCD, and adults.
- To assess the impact of sensory feedback (vision, audition) on tapping performance.
Main Methods:
- Participants: 10 children with DCD, 10 typically developing (TD) children, 10 adults.
- Task: Self-selected anti-phase finger tapping under four sensory conditions (full, vision-only, audition-only, none).
- Measures: Intertap interval (ITI), ITI variability, relative phasing (RP), RP variability.
Main Results:
- Children with DCD showed similar tapping frequency but greater ITI and RP variability than TD children and adults.
- Sensory conditions (vision, audition) did not significantly alter performance across groups.
- DCD group demonstrated intrinsic deficits in tapping accuracy and coordination consistency.
Conclusions:
- Visual and auditory feedback are not primary drivers for self-selected bilateral finger tapping.
- Children with DCD possess intrinsic limitations in motor timing accuracy and coordination.
- Findings highlight inherent motor control challenges in DCD, independent of external sensory cues.
