Fingertip force planning during grasp is disrupted by impaired sensorimotor integration in children with hemiplegic cerebral palsy
Fingertip force planning during grasp is disrupted by impaired sensorimotor integration in children with hemiplegic cerebral palsy
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DOI：
10.1203/01.pdr.0000242370.41469.74
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发表时间：
2006-11-01
影响因子：
3.6
通讯作者：
Steenbergen, Bert
中科院分区：
文献类型：
--
作者：
Gordon, Andrew M.;Charles, Jeanne;Steenbergen, Bert
在本研究中，我们考察了偏瘫脑瘫(CP)儿童在握握过程中使用指尖力量的预期控制的能力，以及是否通过用对侧手抬起来促进预期控制。8名患有脑性瘫痪的儿童(4-13岁)被要求用一只手抬举一个装有力传感器的250克或500克的物体，然后立即用另一只手抬几次。对于体重和起始手(受累或非受累)的每一种组合，都重复这一过程。与以前的研究相似，负荷力的发展速度表明，在抬举过程中，受累的手的预期控制受损，而非受累的手的预期控制完好。以及将预期控制从无关的手转移到相关的手中。然而，令人惊讶的是，我们还发现了从受累的手到非受累的手的转移。结果表明，受累手部的预期控制受损并不是纯粹的感觉或运动问题，而是由于同一只手的感觉信息和随后的运动输出不能适当地整合。这些结果提供了关于预期控制受损的潜在机制的重要信息，并可能具有重要的临床意义。
In the present study we examine the ability of children with hemiplegic cerebral palsy (CP) to use anticipatory control of fingertip forces during grasping, and whether anticipatory control is facilitated by lifts with the contralateral hand. Eight children with CP (age 4-13) were asked to perform several lifts of either a 250-g or 500-g object instrumented with force transducers with one hand, followed immediately by several lifts with the contralateral hand. This was repeated for each combination of weight and starting (involved or non-involved) hand. Similar to previous studies, the rate of load force development showed impaired anticipatory control during lifts With the involved hand, intact anticipatory control in the non-involved hand. and transfer of anticipatory control from the non-involved to the involved hand. Surprisingly, however, we also found a transfer from the involved hand to the non-involved hand. The results suggest that the impaired anticipatory control in the involved hand is not purely a sensory or motor problem, and instead is due to an inability to appropriately integrate sensory information With subsequent motor output of the same hand. These results provide important information about the mechanisms underlying impaired anticipatory control, and may have important clinical implications.