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Spatiotemporal linkage in infant interlimb coordination.

E C Goldfield, G F Michel

    Developmental Psychobiology
    |May 1, 1986
    PubMed
    Summary
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    Infant reaching develops significantly between 7 and 11 months. Young infants coordinate both hands simultaneously and in the same direction, while older infants use complementary movements.

    Area of Science:

    • Developmental psychology
    • Motor control
    • Infant behavior

    Background:

    • Bimanual reaching is a complex motor skill that emerges in infancy.
    • Understanding the developmental trajectory of bimanual coordination is crucial for assessing motor development.

    Purpose of the Study:

    • To investigate the developmental changes in the timing and direction of arm and hand movements during bimanual reaching in infants.
    • To compare the coordination patterns of bimanual reaching in 7-month-old and 11-month-old infants.

    Main Methods:

    • Observational study analyzing video recordings of infants reaching for a transparent cube.
    • Frame-by-frame video analysis to assess the temporal linkage and directional movements of both hands.

    Main Results:

    Related Experiment Videos

    • Seven-month-old infants demonstrated more temporally linked hand movements compared to 11-month-old infants.
    • At 7 months, infants' hands moved towards the object in the same direction; at 11 months, hands moved in opposite, complementary directions.

    Conclusions:

    • Infant bimanual reaching undergoes significant developmental changes in coordination between 7 and 11 months.
    • The transition from same-direction to complementary-direction hand movements reflects increasing motor control and planning capabilities.