Wenzel D, Thoden U, Frank A
Pflugers Arch. 1978 May 18;374(2):107-13. doi: 10.1007/BF00581288.
The modulation of monosynaptic forelimb reflexes by tonic neck positions was investigated in cats with the head fixed. Lateral flexion of the body in a horizontal plane markedly facilitates reflexes of the deep radial nerve (DR) in the ipsilateral forelimb, while the antagonistic ulnar nerve (ULN) reflexes are strongly inhibited. Opposite effects are seen after contralaternal body movement. Dorsiflexion of the body clearly increases DR-reflexes and exerts a reciprocal although more pronounced inhibition on ULN reflexes. Opposite effects appear after ventriflexion. The reflex modulation starts with head-body displacements of approximately 5 degrees and increases with increasing angles. Furthermore reflex modulation does not depend on the intact cerebrum and cerebellum. The comparison of forelimb and hindlimb reflexes shows a decrease of the neck influences along the spinal cord.
在头部固定的猫中研究了紧张性颈部姿势对单突触前肢反射的调节作用。在水平面内身体向一侧屈曲明显促进同侧前肢桡神经深支（DR）的反射，而拮抗的尺神经（ULN）反射则受到强烈抑制。对侧身体运动后会出现相反的效果。身体背屈明显增加DR反射，并对ULN反射产生相反但更明显的抑制作用。身体腹屈后会出现相反的效果。反射调节始于头部与身体大约5度的位移，并随角度增加而增强。此外，反射调节不依赖于完整的大脑和小脑。前肢和后肢反射的比较表明，颈部影响沿脊髓逐渐减弱。
