Robertson L T, Grimm R J
Exp Brain Res. 1975 Nov 14;23(5):447-62. doi: 10.1007/BF00234914.
The activity of neurons in the dentate nucleus of the squirrel monkey was studied during the execution of a controlled, sequential movement that required different trajectories of the forearm. Examination of 207 dentate neurons ipsilateral to the performing limb revealed that over 80% of the neurons isolated were distinctly correlated with performance. The majority of these neurons had a tonic discharge pattern that usually increased coincident with the start of the movement and was maintained throughout most of the performance. A smaller group of cells ahd a burst of activity that was restricted only to a narrow part of the performance. About 30% of the tonic neurons altered their pattern of discharge whenever different limb trajectories were required, but burst cells showed exxentially no change. Detailed analysis of spike patterns revealed that no dentate neurons were phasically correlated with individual flexion-extension cycles of the performance sequence. Dentate neurons appear to be related to some general function of motor performance rather than the actions of joints or muscles used to execute the task.
在松鼠猴执行需要前臂不同轨迹的受控连续运动过程中，对其齿状核中的神经元活动进行了研究。对执行肢体同侧的207个齿状神经元的检查发现，分离出的神经元中超过80%与运动表现明显相关。这些神经元中的大多数具有紧张性放电模式，通常在运动开始时增加，并在大部分运动过程中持续。一小部分细胞有一阵活动，仅局限于运动表现的一个狭窄部分。大约30%的紧张性神经元在需要不同肢体轨迹时会改变其放电模式，但爆发性细胞基本没有变化。对尖峰模式的详细分析表明，没有齿状神经元与运动序列的单个屈伸周期呈相位相关。齿状神经元似乎与运动表现的某些一般功能有关，而不是与执行任务所使用的关节或肌肉的动作有关。
