运动皮层刺激诱发肌肉收缩过程中皮质脊髓运动神经元和肌梭运动通路的独立性。
The independence of corticomotoneuronal and fusimotor pathways in the production of muscle contraction by motor cortex stimulation.
作者信息
Koeze T H
出版信息
J Physiol. 1968 Jul;197(1):87-105. doi: 10.1113/jphysiol.1968.sp008548.
Abstract
- The response of thirty spindle afferents was studied during cortical stimulation of the ;best point' for eliciting a contraction of tibialis anticus in baboons anaesthetized with N(2)O/O(2) mixtures supplemented by small doses of barbiturates.2. No evidence of fusimotor activity before a contraction of the muscle was found. Evidence of fusimotor activity during the contraction and after the cortical stimulus was found. The various problems associated with interpretation of this activity are discussed.3. Depression of the spindle afferent response by tetanic cortical stimulation, which produced no detectable tension change, was found for four spindle afferents. This depression was particularly well documented for one spindle afferent. The depression could be explained by a decrease of static fusimotor activity.4. The spindle afferent response to muscle stretch was studied during light anaesthesia. The effect of barbiturates on this response suggested a depression of static fusimotor activity.
摘要
在使用N₂O/O₂混合气体并辅以小剂量巴比妥类药物麻醉的狒狒中，研究了30条梭形传入神经在刺激诱发胫骨前肌收缩的“最佳点”时的反应。
在肌肉收缩前未发现肌梭运动活动的证据。在收缩期间和皮层刺激后发现了肌梭运动活动的证据。讨论了与这种活动解释相关的各种问题。
对于4条梭形传入神经，发现强直皮层刺激可抑制梭形传入反应，而这种刺激未产生可检测到的张力变化。对于1条梭形传入神经，这种抑制作用有特别详细的记录。这种抑制作用可以用静态肌梭运动活动的减少来解释。
在浅麻醉期间研究了梭形传入神经对肌肉拉伸的反应。巴比妥类药物对这种反应的影响表明静态肌梭运动活动受到抑制。
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The independence of corticomotoneuronal and fusimotor pathways in the production of muscle contraction by motor cortex stimulation.运动皮层刺激诱发肌肉收缩过程中皮质脊髓运动神经元和肌梭运动通路的独立性。
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THE EFFECTS OF STIMULATION OF STATIC AND DYNAMIC FUSIMOTOR FIBRES ON THE RESPONSE TO STRETCHING OF THE PRIMARY ENDINGS OF MUSCLE SPINDLES.刺激静态和动态肌梭传入纤维对肌梭初级末梢牵张反应的影响
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