Cortical control for mastication in cats: Changes in masticatory movements following lesions in the masticatory cortex
Cortical control for mastication in cats: Changes in masticatory movements following lesions in the masticatory cortex
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猫咀嚼的皮质控制：咀嚼皮层损伤后咀嚼运动的变化
DOI：
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发表时间：
2005
影响因子：
0.9
通讯作者：
Takako Sato
中科院分区：
文献类型：
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作者：
H. Hiraba;Takako Sato
Hiraba和Sato在之前的一篇论文中报道，准确的咀嚼可能是由双侧咀嚼区（MA）和运动皮层的皮质加工来完成的。本研究的目的是确定患有单侧或双侧MA病变的猫是否表现出咀嚼功能的变化。在利用单单元记录和皮质内微刺激方法探索咀嚼相关神经元（MRNs）的机械感受野和运动效应后，我们在MA中注射了kainic酸（0.1%,2.0µl），在MA中制造了不同的病变。由于前文报道的MA分为面部(F)和口内(I)投影区，因此准备单侧病变为for I，双侧病变为f&f， I & I或f&i（一侧为F，另一侧为I）的猫。单侧f&i病变和双侧f&i病变的猫除了食物摄入和咀嚼时间延长外，咀嚼功能没有变化。双侧病变进入f&f或I & I的猫在咀嚼时表现出更大的下颌开口。特别是后一组表现出巨大的下巴张开，咀嚼开始延迟，难以在舌头上控制食物。在所有患有各种类型病变的猫中，咀嚼和吞咽节律保持正常。这些发现表明，准确的咀嚼是通过双侧MA的f&f和I & I之间的紧密结合来完成的。
In a previous paper (Hiraba and Sato ) we reported that an accurate mastication might be executed by the cortical processing in bilateral masticatory area (MA)and motor cortices. The aim of this study was to determine if cats with lesion of either unilateral or bilateral MA showed changes in mastication. After exploring mechanoreceptive fields and motor effects of mastication-related neurons (MRNs) in MA using the single unit recording and intracortical microstimulation methods, we made various lesions in MAs with injections of kainic acid (0.1%, 2.0 µl). Since the MA was divided into facial (F) and intraoral (I) projection areas as reported in the previous paper, cats with the unilateral lesion in F or I, and with the bilateral lesion in F & F, I & I or F & I (F on one side and I on other side) were prepared. Cats with unilateral lesion in F or I and with bilateral lesion in F & I showed no changes in mastication except for prolongation of the food intake and masticatory periods. Cats with bilateral lesion into F & F, or I & I showed wider jaw-opening during mastication. Particularly, the latter group showed enormous jaw-opening, delay in the start of mastication and difficulty in manipulating food on the tongue. In all cats with lesions of each type, masticatory and swallowing rhythms remained normal. These findings suggest that accurate mastication is executed by the close integration between F & F and I & I of the bilateral MA.
豚鼠皮质诱导的节律性下颌运动期间下颌运动与三叉神经运动神经元膜电位波动之间的关系。
影响因子：
2.5
作者：
Goldberg,LJ;Chandler,SH;Tal,M
通讯作者：
Tal,M