Coordination of upper and lower limb segments: deficits on the ipsilesional side after unilateral stroke
Coordination of upper and lower limb segments: deficits on the ipsilesional side after unilateral stroke
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DOI：
10.1007/s002210100891
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发表时间：
2001-12-01
影响因子：
2
通讯作者：
Swinnen, SP
中科院分区：
文献类型：
--
作者：
Debaere, F;Van Assche, D;Swinnen, SP
研究了单侧中风患者和年龄匹配的健康对照组的同侧肢体协调性。在正常视力和蒙眼条件下，研究了前臂和小腿的周期性单肢运动及其协调性，其中节段在相同方向（同向）或不同方向（非同向）运动。研究结果显示，中风患者患侧肢体节段的协调困难，这种影响在非同向协调过程中比在同向协调过程中更明显。此外，与对照组相比，中风患者的周期持续时间更长，运动幅度更短。总的来说，目前的研究结果清楚地证明了中风患者在所谓的"未受影响的一侧"存在运动控制缺陷。“正常视力的可用性并没有减轻这些缺陷。因此，目前的研究结果更普遍的含义似乎是，肢体间协调是一个复杂的功能，需要两个半球的完整性。左半球和右半球卒中组的比较显示，左半球病变的患者比右半球病变的患者在执行更困难的非等向模式时倾向于更多变。这可能暗示了左半球在同侧协调的组织中有更明显的参与。然而，运动的时空特征（周期持续时间，幅度）在两个中风组之间没有差异。
Coordination of the ipsilateral limbs was studied in unilateral stroke patients and a control group of healthy age-matched controls. Cyclical single-limb movements of the forearm and lower leg as well as their coordination, with the segments moving either in the same (isodirectional) or in different directions (nonisodirectional), were investigated under normal vision and blindfolded conditions. Findings revealed that stroke patients experienced difficulties with coordination of the limb segments on the ipsilesional side and this effect was more pronounced during nonisodirectional than during isodirectional coordination. In addition, cycle durations were larger and movement amplitudes shorter in stroke patients as compared to controls. Overall, the present findings clearly demonstrated motor control deficits in stroke patients on the so-called "unaffected side." The availability of normal vision did not alleviate these deficits. Therefore, the more general implication of the present findings appears to be that interlimb coordination is a complex function, requiring the integrity of both hemispheres. Comparison of the left- and right-hemispheric stroke groups revealed that patients with a left-hemisphere lesion tended to be more variable in performing the more difficult nonisodirectional pattern than patients with a right-hemisphere lesion. This possibly hints at a more pronounced involvement of the left hemisphere in the organization of ipsilateral coordination. The spatiotemporal features of movement (cycle duration, amplitude), however, did not differ between both stroke groups.