Mechanisms that underlie coordination in children with developmental coordination disorder

Area of Science:

• Neuroscience
• Developmental Psychology
• Motor Control

Background:

• Developmental Coordination Disorder (DCD) affects motor skills.
• Children with DCD often have difficulties processing sensory information (visual, auditory, vibrotactile).
• Understanding sensory processing is crucial for addressing motor coordination deficits.

Purpose of the Study:

• To investigate reaction time (RT) patterns in children with and without DCD.
• To explore how age and sensory modality affect information processing in DCD.
• To identify potential mechanisms underlying motor coordination difficulties in DCD.

Main Methods:

• Used a compatibility-incompatibility paradigm to assess choice reaction time (RT).
• Tested young (6-7 years) and older (9-10 years) children with and without DCD.
• Employed visual, auditory, and vibrotactile sensory modalities.

Main Results:

• Younger children were slower than older children across all sensory modalities.
• Children with DCD showed slower processing for visual and vibrotactile stimuli, especially under complex mappings.
• Children with DCD exhibited faster responses to auditory stimuli compared to unaffected children.

Conclusions:

• Sensory processing, particularly vibrotactile, may be critical to motor coordination issues in DCD.
• There is a developmental trajectory in visual and auditory information processing.
• Findings highlight distinct sensory processing profiles in children with DCD.