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在１２只成年猫上，用微电极记录了外膝体神经元对不同方位（方向）的移动正弦光栅刺激的反应，测定了细胞在不同时间、空间频率下的方位、方向调谐特性。在一定的时频范围内，外膝体神经元的方位敏感性受时间频率的影响不大，而方向敏感性受时间频率的影响相对较大：在其它参数不变的情况下，改变时间频率可产生相当不同的方向调谐特性。外膝体神经元一般在近于截止频率的较高空间频率下具有较强的方位敏感性，而在近于最优空间频率的较低空间频率下呈现出较强的方向敏感性。多数方位、方向敏感性细胞对空间频率的依赖较大，即只在一个较窄的空间频率范围内呈现出它们的敏感性或随空间频率的不同敏感性强度产生较大的变化；也有少数方位、方向敏感性细胞在较宽的空间频率范围内呈现明显的方位、方向敏感性。结果提示，外膝体神经元的方位敏感性和方向敏感性的产生，有着不同的时间、空间机制
In 12 adult cats, the responses of external geniculate neurons to the moving sinusoidal stimuli in different directions (directions) were recorded by microelectrode, and the orientation and direction tuning characteristics of the cells were measured under different time and space frequencies. Within a certain time-frequency range, the sensitivity of the lateral geniculate neurons is not affected by the time frequency, while the directional sensitivity is relatively affected by the time frequency: in the case of other parameters, the change of the time frequency Can produce quite different directional tuning characteristics. Lateral geniculate neurons generally have strong azimuthal sensitivity at higher spatial frequencies near the cut-off frequency, while show stronger directional sensitivity at lower spatial frequencies near the optimal spatial frequency. Most azimuthal and direction sensitive cells are more dependent on the spatial frequency, ie, they exhibit their sensitivity only in a narrower spatial frequency range or greater variations in the intensity of sensitivity with different spatial frequencies; there are also a few orientations , Directionally sensitive cells show obvious azimuthal and directional sensitivity in a wide range of spatial frequencies. The results suggest that the lateral and lateral geniculate motor neurons in the direction of the sensitivity and orientation of the production, with different time and space mechanisms