Spatial-temporal analysis of movements in children.

Area of Science:

• Developmental psychology
• Motor control
• Human movement science

Background:

• Hand-eye coordination is crucial for motor development.
• Understanding the interplay between motor programming and visual guidance is key.

Purpose of the Study:

• To investigate the developmental changes in hand-eye coordination.
• To test the hypothesis of evolving relationships between motor programming and visual guidance systems in reaching movements.

Main Methods:

• Children aged 5, 7, 9, and 11 performed open-loop reaching movements without visual feedback.
• Visually guided reaching was assessed using displacing prisms to analyze trajectory components.
• Spatial-temporal movement characteristics and visual guidance activity were analyzed.

Main Results:

• Significant changes in spatial-temporal features of open-loop reaching were observed.
• The degree of visually guided activity also showed developmental shifts.
• A shift from programming system dominance at 5 years to guidance system dominance at 7 years was noted.

Conclusions:

• The relationship between motor programming and visual guidance systems evolves during childhood.
• Integration of both systems occurs between 7 and 11 years of age.
• These findings offer insights into the developmental trajectory of reaching movements.