Carlson H, Lindquist C
Acta Physiol Scand. 1976 Jul;97(3):332-42. doi: 10.1111/j.1748-1716.1976.tb10271.x.
The exteroceptive influences on tonic activity and on stretch reflexes of the longissimus dorsi and multifidus spinae muscles were investiagted in decerebrate, spinal and chloralose-anesthetized cats. Adequate skin stimulation was used to map out facilitatory and inhibitory skin areas on the trunk and the extremities. On the trunk facilitatory areas are relatively large and located at the dorsal side while inhibitory areas are confined to the ventrolateral part of the contralateral body half. The facilitatory skin fields are of approximately the same size in decerebrate and spinal cats. On leg skin stimulation facilitation can be evoked from the ipsilateral hind limb while inhibition results from stimulation of the other limbs. Spinal cord transection increased excitatory effects of ipsilateral hind limb stimulation. Reflex responses in the back muscles to applied stretch are described. These reflexes were used as test reflexes in experiments with conditioning stimulation of the peripheral nerves supplying skin areas from which effects on back muscle activity were evoked by adequate stimulation. The conditioning-test experiments and those using adequate stimulation show that the longissimus dorsi and multifidus spinae are activated or facilitated by an ipsilateral stimulus to skin afferents. The extent of the effects induced by stimulation of skin differs in the types of preparation used. These differences may be accounted for by assuming a supraspinal control of the reflex pathways studied.
在去大脑、脊髓横断和水合氯醛麻醉的猫身上，研究了外部感受性对背最长肌和多裂肌的紧张性活动及牵张反射的影响。采用适当的皮肤刺激来描绘躯干和四肢上的易化性和抑制性皮肤区域。在躯干上，易化性区域相对较大，位于背侧，而抑制性区域局限于对侧身体半部的腹外侧部分。在去大脑猫和脊髓横断猫中，易化性皮肤区域大小大致相同。刺激腿部皮肤时，同侧后肢可诱发易化，而刺激其他肢体则产生抑制。脊髓横断增强了同侧后肢刺激的兴奋作用。描述了背部肌肉对施加牵张的反射反应。在对供应皮肤区域的外周神经进行条件刺激的实验中，这些反射被用作测试反射，通过适当刺激可从这些皮肤区域诱发对背部肌肉活动的影响。条件-测试实验以及使用适当刺激的实验表明，对皮肤传入神经的同侧刺激可激活或易化背最长肌和多裂肌。在所用的不同制备类型中，刺激皮肤所诱导的效应程度有所不同。这些差异可以通过假设对所研究的反射通路存在脊髓上控制来解释。
