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[Tactile sensitivity as a part of the kinesthetic system (a comparative clinico-physiological approach)]
Insights
Tactile sensitivity in children
Area of Science:
- Neuroscience
- Pediatrics
- Rehabilitation Medicine
Background:
- Understanding the relationship between sensory perception and motor function is crucial for child development.
- Tactile sensitivity and motor activity in the forearm are key factors in functional outcomes, particularly for children with limb differences.
Purpose of the Study:
- To investigate the correlation between tactile sensitivity and muscular motor activity in the forearm of children.
- To assess how this relationship changes with age and in children with forearm limb differences.
- To determine the optimal sensory-motor balance for successful prosthetic fitting.
Main Methods:
- Experiments conducted on healthy children and children with congenital or post-amputation forearm limb differences.
- Utilized focused ultrasound to measure tactile sensitivity thresholds.
- Assessed muscular motor activity levels in the forearm across different age groups (7, 10, and 14 years).
Main Results:
- Increased forearm motor activity consistently led to decreased tactile thresholds across all age groups.
- The lowest tactile thresholds were observed in 10-year-old children.
- A specific zone innervated by the median skin nerve showed the most sensitive tactile perception.
Conclusions:
- The interplay between tactile sensitivity and motor activity significantly influences functional outcomes.
- Age and the specific nerve innervation zone impact sensory-motor integration in the forearm.
- This understanding is vital for optimizing prosthetic rehabilitation strategies in pediatric populations.
Abstract:
In experiments on healthy children as well as on children with inborn and postamputation stumps of the forearm, studies have been made of the relationship between the level of tactile sensitivity in the skin of the forearm and the level of its muscular motor activity; these studies were performed using focused ultrasound in children at the age of 7, 10 and 14 years. It was found that with the increase in motor activity of the forearm, irrespectively of the age, tactile thresholds decrease. The success of prosthetic appliance depends on the ratio between skin tactile sensitivity and motor activity of the forearm. The lowest thresholds were found in 10-year children and in a zone innervated by the median skin nerve of the forearm.