Motor control of handwriting in the developing brain: A review

Area of Science:

• Neuroscience
• Developmental Psychology
• Motor Control

Background:

• Writing is a complex motor skill involving cognitive and neural processes.
• Understanding the developmental trajectory of handwriting is crucial for identifying learning challenges.
• Existing models focus on motor programs but require further neurodevelopmental insights.

Purpose of the Study:

• To review the acquisition of writing motor aspects in children and adults.
• To describe behavioral and neural changes during handwriting development.
• To identify key brain regions involved in motor learning for handwriting.

Main Methods:

• Literature review of behavioral and neuroimaging studies on handwriting acquisition.
• Analysis of developmental changes in motor control strategies.
• Examination of neural correlates associated with motor learning in writing.

Main Results:

• Handwriting evolves from stroke-by-stroke programming to automatic trajectory control around age 10.
• Skill acquisition involves a more spatially restricted and functionally specific neural network.
• The cerebellum and left dorsal premotor cortex are critical for learning handwriting.

Conclusions:

• Handwriting acquisition demonstrates a clear developmental progression in motor control and neural engagement.
• Cerebellum and left dorsal premotor cortex play pivotal roles in mastering this complex skill.
• This understanding can inform interventions for handwriting difficulties.