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Feedforward motor control in developmental dyslexia and developmental coordination disorder: Does comorbidity matter?
- Source :
- Research in Developmental Disabilities, Research in Developmental Disabilities, Elsevier, 2018, 76, pp.25-34. ⟨10.1016/j.ridd.2018.03.001⟩, Research in Developmental Disabilities, 2018, 76, pp.25-34. ⟨10.1016/j.ridd.2018.03.001⟩
- Publication Year :
- 2017
-
Abstract
- Background and aim Feedforward and online controls are two facets of predictive motor control from internal models, which is suspected to be impaired in learning disorders. We examined whether the feedforward component is affected in children (8–12 years) with developmental dyslexia (DD) and/or with developmental coordination disorder (DCD) compared to typically developing (TD) children. Methods Children underwent a bimanual unloading paradigm during which a load supported to one arm, the postural arm, was either unexpectedly unloaded by a computer or voluntary unloaded by the subject with the other arm. Results All children showed a better stabilization (lower flexion) of the postural arm and an earlier inhibition of the arm flexors during voluntary unloading, indicating anticipation of unloading. Between-group comparisons of kinematics and electromyographic activity of the postural arm revealed that the difference during voluntary unloading was between DD-DCD children and the other groups, with the former showing a delayed inhibition of the flexor muscles. Conclusion Deficit of the feedforward component of motor control may particularly apply to comorbid subtypes, here the DD-DCD subtype. The development of a comprehensive framework for motor performance deficits in children with learning disorders will be achieved only by dissociating key components of motor prediction and focusing on subtypes and comorbidities.
- Subjects :
- Male
medicine.medical_specialty
kinematic analysis
Developmental dyslexia
Comorbidity
Development
050105 experimental psychology
Developmental coordination disorder
Dyslexia
03 medical and health sciences
Typically developing
0302 clinical medicine
Physical medicine and rehabilitation
EMG
Child Development
Developmental and Educational Psychology
medicine
Learning disorders
Humans
0501 psychology and cognitive sciences
School aged children
Internal model
Child
Muscle, Skeletal
Electromyography
musculoskeletal, neural, and ocular physiology
[SCCO.NEUR]Cognitive science/Neuroscience
05 social sciences
Feed forward
Feedforward control
Motor control
Flexor muscles
medicine.disease
musculoskeletal system
Anticipation
Biomechanical Phenomena
Motor Skills Disorders
Clinical Psychology
Motor Skills
Female
Psychology
030217 neurology & neurosurgery
Psychomotor Performance
Subjects
Details
- ISSN :
- 18733379 and 08914222
- Volume :
- 76
- Database :
- OpenAIRE
- Journal :
- Research in developmental disabilities
- Accession number :
- edsair.doi.dedup.....1b7de82e7005794047c8ecd9a6efed20