Movement fields of saccade-related burst neurons in the monkey superior colliculus
Movement fields of saccade-related burst neurons in the monkey superior colliculus
复制标题
猴上丘眼跳相关突发神经元的运动场
DOI：
10.1016/0006-8993(80)91158-0
复制
发表时间：
1980
期刊：
影响因子：
2.9
通讯作者：
L. Mays
中科院分区：
文献类型：
--
作者：
D. Sparks;L. Mays
详细检查了上丘（SC）神经元的眼跳前爆发，以确定有关眼跳矢量分量（幅度和方向）的信息是否包含在爆发内。结果表明，源自 SC 中单个与扫视相关的突发神经元的尖峰活动模式并不编码扫视方向或幅度。相同的放电可能发生在大范围的眼跳之前。放电的幅度、配置或时间均不以任何独特的方式与单独的扫视的持续时间或单独的扫视的幅度相关。此外，关于扫视幅度或方向的信息不太可能由源自不同 SC 神经元的不同类型的信号编码。对于不同的神经元，突发参数与最佳扫视幅度或方向之间没有一致的关系。建议将SC的扫视相关突发神经元的放电作为脑桥电路的触发输入，产生所需的扫视突发信号。有关扫视方向和幅度的信息不包含在该触发信号中，但必须从 SC 活动的空间分布中提取。
The presaccadic burst of superior colliculus (SC) neurons was examined in detail to determine whether or not information concerning the vector components (amplitude and direction) of a saccade is contained within the burst. Results indicate that the pattern of spike activity originating from a single saccade-related burst neuron in the SC does not encode saccade direction or amplitude. Identical discharges may precede a wide range of saccades. Neither the magnitude, configuration nor timing of the discharge are related in any unique way to the duration of the saccade alone or the amplitude of the saccade alone. Furthermore, it is unlikely that information concerning saccade amplitude or direction is encoded by different types of signals originating from different SC neurons. For different neurons, there is no consistent relationship between the parameters of the burst and the optimal saccade amplitude or direction.It is suggested that the discharge of saccade-related burst neurons of the SC serves as a trigger input to pontine circuitry generating the required saccadic burst signals. Information concerning saccade direction and amplitude is not contained within this trigger signal, but must be extracted from the spatial distribution of SC activity.