Location information is processed through two types of spatial processing; categorical and coordinate processing. Categorical spatial relations indicate where an object is relative to another object, without regard to the metric distance between the two objects. Coordinate spatial relations indicate metric distance without regard to relative location. In human behavioral studies, the magnocellular pathway of the lateral geniculate nucleus has been implicated in coordinate spatial processing abilities. Magnocellular pathway cells (type IV) have a center surround organization, such that red light inhibits neuronal firing. In these behavioral studies, red stimuli decreases coordinate spatial processing accuracy. Prior studies also show that there is a lag between the time of visual stimulus presentation and the time of observing a neural response in the magnocellular pathway. We sought to understand whether prior presentation of red stimuli decreases coordinate spatial performance, and also examined its effects on categorical spatial performance. The results indicate that prior presentation of red stimuli decreases accuracy and perceived confidence on both the categorical and coordinate tasks. These results confirm prior findings of the association between magnocellular pathway function and coordinate spatial processing. Implications for categorical task results and associated neural pathways are discussed.

中文翻译：

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简短地说，以前，暴露于红色会降低类别并协调空间任务的执行。

位置信息通过两种类型的空间处理来处理：分类和坐标处理。分类空间关系指示一个对象相对于另一个对象的位置，而不考虑两个对象之间的度量距离。坐标空间关系表示度量距离，而不考虑相对位置。在人类行为研究中，外侧膝状核的大细胞通路与协调的空间加工能力有关。核细胞通路细胞（IV型）具有中心环绕结构，因此红光会抑制神经元放电。在这些行为研究中，红色刺激会降低坐标空间处理的准确性。先前的研究还表明，视觉刺激的呈现时间与观察到的巨细胞途径中的神经反应之间存在时滞。我们试图了解红色刺激的先前表现是否会降低坐标空间性能，并检查其对分类空间性能的影响。结果表明，红色刺激的先前呈现降低了分类任务和协调任务的准确性和感知信心。这些结果证实了巨细胞通路功能和协调空间处理之间的关联的先前发现。讨论了分类任务结果和相关神经通路的含义。并研究了其对分类空间性能的影响。结果表明，红色刺激的先前呈现降低了分类任务和协调任务的准确性和感知信心。这些结果证实了巨细胞通路功能和协调空间处理之间的关联的先前发现。讨论了分类任务结果和相关神经通路的含义。并研究了其对分类空间性能的影响。结果表明，红色刺激的先前呈现降低了分类任务和协调任务的准确性和感知信心。这些结果证实了巨细胞通路功能和协调空间处理之间的关联的先前发现。讨论了分类任务结果和相关神经通路的含义。