Neural underpinnings of impaired predictive motor timing in children with Developmental Coordination Disorder.
DCD slows kids down because their brain timing circuits under-react to advance cues.
01Research in Context
What this study did
The team compared kids with Developmental Coordination Disorder to typically developing peers.
They used fMRI while children reacted to cues that told them when to move.
The goal was to see if brain timing circuits fired differently in DCD.
What they found
Kids with DCD showed weaker brain activation in key timing areas.
They also gained less speed from the predictive cues.
Their reactions stayed slow even when the cue gave the answer.
How this fits with other research
Asonitou et al. (2012) first showed broad motor-cognitive gaps in preschool DCD.
Debrabant et al. (2013) now zooms in on the neural cause: dull timing circuits.
Fuelscher et al. (2015) later replicated the idea, finding DCD kids also struggle to imagine and fix reaches mid-flight.
Nobusako et al. (2024) extends the story, showing these children also miss action-outcome patterns.
Together the four papers trace one line: DCD is not just clumsy muscles; the whole prediction system is off.
Why it matters
When a child with DCD looks uncoordinated, the real hitch may be timing prediction.
Use clear, steady temporal cues in therapy: count beats, clap rhythms, keep pace predictable.
Add motor-imagery drills like "picture the throw before you throw" to wake up those circuits.
Check progress with simple reaction-time games; small gains in speed can signal the brain is learning the beat.
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02At a glance
03Original abstract
A dysfunction in predictive motor timing is put forward to underlie DCD-related motor problems. Predictive timing allows for the pre-selection of motor programmes (except 'program' in computers) in order to decrease processing load and facilitate reactions. Using functional magnetic resonance imaging (fMRI), this study investigated the neural correlates of motor timing in DCD (n=17) and typically developing children (n=17). The task involved motor responses to sequences of visual stimuli with predictive or unpredictive interstimulus intervals (ISIs). DCD children responded with a smaller reaction time (RT) advantage to predictive ISIs compared to typically developing children. Typically developing children exhibited higher activation in the right dorsolateral prefrontal cortex (DLPFC) and right inferior frontal gyrus (IFG) for responses at unpredictive as opposed to predictive ISIs, whereas activations in DCD children were non-differentiable. Moreover, DCD children showed less activation than typically developing children in the right DLPFC, the left posterior cerebellum (crus I) and the right temporo-parietal junction (TPJ) for this contrast. Notably, activation in the right temporo-parietal junction (TPJ) positively correlated with RT as an indicator of processing load in both groups. These data indicate that motor performance in DCD children requires extra processing demands due to impaired predictive encoding.
Research in developmental disabilities, 2013 · doi:10.1016/j.ridd.2013.02.008