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Body schema plasticity is altered in Developmental Coordination Disorder.
Marie Martel1, Véronique Boulenger2, Eric Koun3
1Laboratoire Dynamique Du Langage, UMR5596, CNRS/University Lyon 2, Lyon, France; Integrative Multisensory Perception Action & Cognition Team - ImpAct, Lyon Neuroscience Research Center, INSERM U1028, CNRS U5292, University Lyon 1, Lyon, France.
Neuropsychologia
|December 26, 2021
Summary
Developmental Coordination Disorder (DCD) impacts motor skills due to altered body representation plasticity. DCD children struggle to update their implicit body schema, unlike typically developing peers, suggesting a wider cause for DCD.
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Area of Science:
- Neuroscience
- Developmental Psychology
- Motor Control
Background:
- Developmental Coordination Disorder (DCD) is characterized by impaired motor skills.
- Current theories attribute DCD to deficits in internal models.
- Accurate movement requires integrating sensory feedback into body representation for action (Body Schema).
Purpose of the Study:
- To test the hypothesis that Body Schema (BS) plasticity is altered in DCD.
- To investigate the role of body representation plasticity in DCD etiology.
- To differentiate between Body Schema and Body Image (BI) plasticity in DCD.
Main Methods:
- A tool-use paradigm was administered to 17 DCD children and a control group.
- Movement kinematics were analyzed before and after tool use.
- Explicit arm length estimates were collected to probe Body Image (BI) plasticity.
Main Results:
- DCD children showed comparable Body Image (BI) plasticity to typically developing peers.
- DCD children failed to update their implicit Body Schema (BS) after tool use.
- Motor learning and tool use control were preserved in DCD children.
Conclusions:
- DCD may involve a deficit in the plasticity of body representation, not solely internal models.
- This widens the theoretical perspective on DCD etiology.
- DCD might affect the state of the effector used for movement execution.