Anticipatory control of digit kinematics: a developmental milestone for motor skill acquisition
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View abstract on PubMed
Summary
This summary is machine-generated.Children
Area Of Science
- Developmental neuroscience
- Sensorimotor control
- Motor learning
Background
- Children's object manipulation skills improve with age and practice.
- Adults strategically adjust grip forces and digit positions based on task demands.
- Sensorimotor memories are crucial for precise object manipulation, yet their developmental trajectory for digit position control is unclear.
Purpose Of The Study
- To investigate the developmental changes in anticipatory control of digit positions in children.
- To understand how sensorimotor memories influence grip planning during dexterous tasks in developing individuals.
Main Methods
- A modified grip apparatus was used to measure digit forces, positions, and object tilt during a manipulation task.
- 39 children aged 5-7, 8-10, and 15-17 years participated.
- Performance was assessed based on object tilt at lift-off, indicating grip accuracy.
Main Results
- Younger children (5-7 years) could not utilize sensorimotor memories of object mass to plan digit positions and forces, leading to significant object tilt.
- Older children (8-10 years) demonstrated a limited capacity to use prior trial information compared to adolescents.
- Adolescents showed more developed anticipatory control of digit positions.
Conclusions
- Dexterity continues to develop into adolescence.
- This study provides insights into the maturation of sensorimotor capabilities for object manipulation throughout childhood and adolescence.
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