Somatotopic localization in cat motor cortex
Somatotopic localization in cat motor cortex
复制标题
猫运动皮层的体位定位
DOI：
10.1016/0006-8993(76)90590-4
复制
发表时间：
1976
期刊：
影响因子：
2.9
通讯作者：
L. Rispal
中科院分区：
文献类型：
--
作者：
A. Nieoullon;L. Rispal
运动皮质点状刺激（4区和6区），并对诱发的运动进行平行观察，可以描述自由活动的成年猫肌肉系统不同部位的运动控制区的精细躯体定位组织。结果表明，电刺激运动皮层所产生的运动总是单一的和非重复的，而不管刺激的持续时间和强度。这些运动被限制在肌肉组织的一个非常精确的部分，实验表明，这种定位与运动皮层中刺激电极尖端的确切位置有关。其他实验数据表明，扰乱动物平衡的运动反应伴随着姿势调整，大脑皮层的刺激允许猫肌肉组织的每个部分定义一个单独的运动控制区，前肢的每个关节都有一个单独的控制区。这是不可能的后肢，这是总是在其整体激活。这些结果建立了一个新的代表性的躯体组织的猫运动皮层。该图显示区域6控制肌肉组织的更多轴向部分，而区域4控制肢体肌肉的近端和远端部分。这张图与之前关于猫运动皮层中躯体位置组织的许多数据进行了比较，特别是与Woolsey的图进行了比较。
Punctate intracortical stimulation of the motor cortex (areas 4 and 6), with parallel observation of the induced movements, permits description of a fine somatotopic organization of the motor control areas for different parts of the musculature in freely moving adult cats.The results show that movements produced by electrical stimulation of the motor cortex are always single and non-repetitive, regardless of the duration and intensity of the stimulation. These movements are restricted to a very precise part of the musculature, and experiments show that this localization is related to the exact position of the tip of the stimulating electrode in the motor cortex. Other experimental data show that motor responses which disturb the animal's equilibrium are accompanied by postural adjustments.Stimulation of the cerebral cortex permits the definition of a separate motor control area for each part of the cat musculature, with an individual control area for each of the joints of the forelimb. This was not possible for the hindlimb, which is always activated in its entirety.These results establish a new representation of the somatotopic organization of the cat motor cortex. This diagram shows that area 6 controls the more axial parts of the musculature, while area 4 controls the proximal and distal parts of the limb muscles. This map was compared to numerous previous data on the somatotopic organization in the cat motor cortex, especially to the map of Woolsey.