When they detect light, rods and cones pass the visual signal from nerve cell to nerve cell to the visual processing part of the brain.

当光线被这些感受器感受到时，杆状和锥状细胞就把视觉信号从一个神经细胞传到另一个神经细胞，一直传送到大脑负责成像处理的区域。

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An improved algorithm of line detector is presented for a visual model of simple cell.

在简单细胞的视觉模型基础上，提出一种线条检测器的改进算法。

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The linear symbol is classified according to the demand for symbol expressing, besides the data-structure of pattern cell of linear symbols is given combining with its visual variable.

本文根据线状要素地理信息表达的需要，对线状符号进行了分类，在分析了线状符号的视觉变量之后，给出了其图案单元的数据结构。

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Cell-phone conversations and other forms of multitasking may slow down the mental and visual processing required to gauge the distance and speed of oncoming cars, the study suggests.

CNN: Multitasking and crosswalks a risky mix for elderly