Effects of postural changes of the upper limb on reflex transmission in the lower limb. Cervicolumbar reflex interactions in man.
Effects of postural changes of the upper limb on reflex transmission in the lower limb. Cervicolumbar reflex interactions in man.
复制标题
上肢姿势变化对下肢反射传递的影响。
DOI：
--
复制
发表时间：
1977
影响因子：
11
通讯作者：
C. Richelle
中科院分区：
文献类型：
--
作者：
P. Delwaide;C. Figiel;C. Richelle
42 名志愿者研究了上肢位置被动变化对下肢三种肌弧反射（比目鱼肌、股四头肌和股二头肌）兴奋性的影响。结果表明，上肢姿势改变可以在远处影响三个肌节弧的兴奋性。当同侧上肢向前或对侧向后时，观察到比目鱼肌和股四头肌腱反射增强，而股二头肌反射减弱。当同侧上肢向后或对侧上肢向前时，这种促进和抑制模式就会逆转。近端肌弧反射的促进和抑制在数量上比比目鱼肌反射更显着。促进和抑制与手臂与躯干的角度并不线性相关。效果从相当大的角度开始，在 45 度时达到最大，并在更大的值时逐渐消失。有人提出，以相互方式对伸肌和屈肌运动核发挥的促进和抑制的独特模式可能取决于连接颈椎和腰椎增大的长本体脊髓神经元。
The influence of passive changes in upper limb position on the excitability of three myotatic arc reflexes (soleus, quadriceps, and biceps femoris) of the lower limb has been explored on 42 volunteers. The results indicate that the excitability of the three myotatic arcs can be influenced at a distance by postural modifications of the upper limb. When the ipsilateral upper limb is forwards or the contralateral backwards, a facilitation of both soleus and quadriceps tendon reflexes is observed while the biceps femoris reflexes are reduced. This pattern of facilitation and inhibition is reversed when the ipsilateral upper limb is backwards or the contralateral forwards. The facilitations as well as inhibitions of proximal myotatic arc reflexes are quantitatively more marked than that of the soleus reflex. Facilitation and inhibition are not linearly related to the angle of the arm with the trunk. Effects begin at a considerable angle, become maximal at 45 degrees, and progressively disappear for greater values. It is suggested that the distinct pattern of facilitation and inhibition which is exerted in reciprocal fashion on extensor and flexor motor nuclei might depend on the long propriospinal neurones connecting cervical and lumbar enlargements.