CODING OF INFORMATION ABOUT RAPID EYE-MOVEMENTS IN PONTINE RETICULAR-FORMATION OF ALERT MONKEYS
CODING OF INFORMATION ABOUT RAPID EYE-MOVEMENTS IN PONTINE RETICULAR-FORMATION OF ALERT MONKEYS
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DOI：
10.1016/0006-8993(76)90188-8
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发表时间：
1976-01-01
期刊：
影响因子：
2.9
通讯作者：
COHEN, B
中科院分区：
文献类型：
--
作者：
HENN, V;COHEN, B
脑桥网状结构（PRF）的嘴旁正中区的神经元[猕猴]在快速眼球运动之前和期间有明显的频率变化，但一般很少或没有与眼位置相关的紧张性活动。水平扫视和快速相位的眼球震颤产生在这个区域。分析了眼动激活的单位（爆发单位）和被抑制的单位（暂停单位）的放电。眼睛运动由具有幅度（A）和角度（α）的矢量描述。这些参数通过方程Δ与某些平面中的位置变化相关。pos = A. cntdot. cos α在所遇到的PRF中的80个单元中的每一个中，活性可以与上述等式的某些参数相关：pos）、振幅（A）或运动方向与参考方向之间的角度的余弦（cos α）。编码眼球运动幅度或特定平面中位置变化的单位通过尖峰数量传达信息。单位编码的运动方向这样做的频率。在许多单位中，信息编码是精确的，从而可以从单个单位的频率变化预测单个眼球运动的方向或幅度。在其他单位中，这可以根据频率变化的平均值来确定。编码方向或位置变化的细胞仅在与眼肌牵拉方向对应的平面中具有频率最大值。矢量描述不仅是一种方便的数学工具，而且可以是在PRF中以及可能在CNS中的其他地方编码眼睛运动的方式。
Neurons in the rostral paramedian zone of the pontine reticular formation (PRF) [of Macaca mulatta] had distinct frequency changes prior to and during quick eye movements, but generally little or no tonic activity associated with eye position. Horizontal saccades and quick phases of nystagmus were generated in this region. Firing of units activated with eye movements (burst units) and of units which were inhibited (pause units) was analyzed. Eye movements were described by a vector having an amplitude (A) and an angle (.alpha.). These parameters were related to position changes in certain planes by the equation .DELTA. pos = A .cntdot. cos .alpha.. In each of 80 cells in the PRF which were encountered, the activity could be related to some parameter of the above equation: change of position (.DELTA. pos), amplitude (A) or the cosine of the angle between the direction of movement and a reference direction (cos .alpha.). Units coding amplitude of eye movement or change in position in a particular plane conveyed the information by number of spikes. Units coding direction of movement did so by frequency. In many units the information coding was precise so that the direction or amplitude of single eye movements could be predicted from the frequency changes of single units. In other units this could be determined from averages of the frequency changes. Cells coding direction or change in position had frequency maxima only in planes corresponding to the pulling direction of the eye muscles. A vector description is not only a convenient mathematical tool, but may be the way eye movements are coded in the PRF and possibly elsewhere in the CNS.