运动神经元

Based on extended Linsker's network developed by Wimbauer et al.,we build a model for the receptive field of toad's R3 ganglion cell and a model for the receptive field of the nLM neuron of pigeon. Computer simulations on the 'head/tail preference' property,the configurational selectivity of the R3 neuron,and the selectivity for contrast,direction,orientation and the length of the moving edges of the nLM neuron,have been made. The simulation results are consistent with the physiological experiments qualitatively.

为揭示这类神经元的信息加工原理，以Wimbauer等人提出的时延Linsker网络为基础，通过将不同的时空动态感受野线性组合，建立了蟾蜍视神经节R3类神经元和家鸽扁豆核神经元的感受野模型，并模拟了R3神经元对蠕虫样刺激物的"头/尾偏爱"特征，细胞对刺激物的构型选择性以及nLM神经元对运动边缘的反差、方向、边缘朝向和长度的选择性。

Firstly, the paper, combining the characteristic of synchronous pulse bursts and inhibition with the modified PCNN model, presents a way of finding the foveation points in the images adaptively and effectively, and simulates the human vision system. Secondly, PCNN is extended to PCNNs, based on the properties of information couple and transmission, an algorithm that is used to fuse images of the same target got by several sensors to an image is presented to simulate the human vision system. Thirdly, combining the properties of synchronous pulse bursts, capture, and transmission and competition of waves, the paper presents two ways of classification, one is an algorithm based on the properties of neuron to capture and inhibit to classify the data taking on any complex unlinear distribution robustly, the other is based on the restricted distance and modified of the former to remove the influence of inferior samples in classification; Finally, based on the accumulative difference pictures, and the forming and transmission of PCNN wave, selecting and controlling the direction of autowave by connecting the neighbouring neurons selectively, the paper presents a way to simulate the tracks of moving object and detect the moving direction.

首先结合PCNN的同步脉冲发放和侧抑制特性，提出了基于改进型PCNN的图像凹点检测算法，该算法是一种自适应而有效的图像凹点检测方法，并且较好地仿真了人类视觉系统；然后，结合信息传递和信息耦合特性，将PCNN扩展成PCNNs，提出了一种基于PCNNs的图像融合算法，能够将多个传感器获取的同一目标的图像信息融合到一幅图像中，有效模拟了人类视觉系统；另外，结合PCNN的同步脉冲发放特性、捕获特性和波的传播竞争特性，开拓地将PCNN用于模式分类中，提出了基于耦合神经元点火捕获／抑制特性的分类方法和改进的约束距离下的PCNN分类方法，前者可实现对样本空间中任意复杂分布训练样本的稳健非线性分类，而后者能够消除训练样本中刺点对分类的影响；最后，结合累积差分图像思想、PCNN波的形成与传播特性，通过各神经元之间连接取向来选择与控制自动波的流向，将PCNN用于运动视觉分析中的运动轨迹模拟及运动方向检测。

No labeled motoneurons were found in the facial nucleus. Labled motoneurons were ipslaterally abolished after the cranial rootlets of accessory...

悬雍垂肌是疑核内运动神经元的轴突，经副神经延脑根出颅，再经由迷走神经咽支进行支配。

Maybe motor neurons are a critical target of oxidants, kick-starting or dominating the process of aging.

也许运动神经元是氧化剂的关键目标，启动或主宰了整个老化的过程。

Spinal muscular atrophy is the name given to a group of inherited disease characterized by muscle weakness and wasting cause of motor neurones defect.

脊髓性肌肉萎缩症是一群因运动神经元退化而造成肌肉萎缩、无力的遗传性疾病。

MAIN OUTCOME MEASURES: The survival rate of motor neurons and the length of cell processes.

主要观察指标：培养运动神经元的细胞存活数目和细胞突起的长度。

Objective To study the protective effects of Schwann cell derived neurotrophic factor on motoneurons of spinal anterior horn from spinal root avulsion induced cell death.

目的 研究雪旺细胞源神经营养因子对臂丛神经根性撕脱所致前角运动神经元死亡的保护作用。

Objective To study survival motor neuron deletion in adult-onset patients with spinal muscular atrophy.

目的 探讨成年起病的脊肌萎缩症患者的运动神经元存活基因SMN的缺失情况。

Objective: To investigate the role of p75NTR in the regeneration of facial nerve nuclei during nerve crush injury.

目的：探讨P75NTR在面神经损伤后面神经核运动神经元再生中的作用。

No p ulp fibers with poisoning and extend significantly reduced. Spinal motor neurons can be seen Golgi body expansion accompanied by Schwann cell swelling.

无髓纤维数量随中毒时间延长而明显减少；脊髓前角运动神经元可见高尔基氏体扩张，伴有雪旺氏细胞肿胀。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了