Kahrilas P J, Doty R W, Bartlett J R
Exp Brain Res. 1980;39(1):11-6. doi: 10.1007/BF00237064.
The firing frequency of a population of 213 units in striate and circumstriate cortex of the moderately restrained rabbit was studied under the influences of alternating 1-min periods of darkness versus steady, diffuse, featureless illumination. The intent was to determine whether luxotonic responses, so prominent in striate cortex of primates, are indeed absent in rabbits. Such was the case, there being only transient occurrences in three units where the continuing rate of discharge in darkness was double that in the light. There were, however, much more modest differences in rate of continuing discharge in light versus darkness, and for 46% of the units discharging greater than 1/s this difference exceeded 10% and/or 1/s. The rate of discharge in any case did not provide a reliable index as to the characteristics of a unit's receptive field in response to patterned visual stimuli. The nature and function of luxotonic activity in primates still not being understood, it cannot be decided whether its absence in rabbits represents a true qualitative or merely a quantitative difference between species.
在适度约束的兔子的纹状皮层和纹周皮层中，研究了213个神经元群体在黑暗与稳定、漫射、无特征光照交替的1分钟周期影响下的放电频率。目的是确定在灵长类动物纹状皮层中如此显著的光张力反应在兔子中是否确实不存在。情况确实如此，仅在三个神经元中有短暂出现，其在黑暗中的持续放电率是光照下的两倍。然而，在光照与黑暗中的持续放电率差异要小得多，对于46%放电频率大于1次/秒的神经元，这种差异超过了10%和/或1次/秒。在任何情况下，放电率都不能作为一个可靠的指标来反映神经元感受野对模式化视觉刺激的反应特征。由于灵长类动物中光张力活动的性质和功能仍未被理解，所以无法确定其在兔子中不存在是代表物种之间真正的质的差异还是仅仅是量的差异。
