Related Experiment Videos
[Connection between finger task movements and contralaterally associated movements in children]
1Hiroshima Shudo University.
Insights
Finger movements show a cooperative link between task actions and contralateral associated movements. This relationship develops with age, impacting fine motor skill performance in children.
Area of Science:
- Developmental psychology
- Motor control research
- Neuroscience
Context:
- Investigates the relationship between voluntary finger movements and involuntary contralateral movements.
- Examines how this relationship develops in young children (ages 5-7).
Purpose:
- To explore the connection between task movements (TM) and contralateral associated movements (CAM).
- To understand the developmental trajectory of motor control and interhemispheric communication in children.
Summary:
- Experiment I revealed an asymmetric relationship between TM and CAM in 5-6-year-olds.
- Experiment II demonstrated that while older children could consciously control CAM, 5-year-olds struggled. TM performance varied based on contralateral control, suggesting a complex interplay.
- Findings indicate a cooperative and reciprocal relationship between task-specific finger movements and contralateral finger movements.
Impact:
- Provides insights into the maturation of motor control and interhemispheric coordination in early childhood.
- Highlights developmental differences in motor inhibition and adaptation.
- Suggests implications for understanding developmental coordination disorders and designing targeted motor interventions.
Abstract:
Two experiments were carried out to investigate the connection between finger task movements (TM) and contralaterally associated movements (CAM). In Experiment I, 40 children ranging in age from five to six were required to play "marbles" (TM) with the right thumb or forefinger, while two investigators checked CAM on their left fingers. The result showed the local relation between TM and CAM wasn't strictly symmetric. In Experiment II, 60 children ranging in age from five to seven were required to consciously control their contralateral finger movements while they played TM. Following three conditions were provided; 1) The free condition with no control, 2) the inhibitory condition with conscious inhibition of CAM, and 3) the imitative condition with a typical CAM pattern. Findings were that, though all children could inhibit CAM consciously, the five-year-olds couldn't. Furthermore, TM performance improved in the lower performance group, but it deteriorated in the higher group in association with the contralateral control. These results suggest that there is a cooperative and reciprocal relationship between TM and the contralateral finger movements.