Maplike representation of celestial E-vector orientations in the brain of an insect
Maplike representation of celestial E-vector orientations in the brain of an insect
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DOI：
10.1126/science.1135531
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发表时间：
2007-02-16
期刊：
影响因子：
56.9
通讯作者：
Homberg, Uwe
中科院分区：
文献类型：
--
作者：
Heinze, Stanley;Homberg, Uwe
对于许多昆虫来说，蓝天的偏振模式可以作为空间导航的指南针提示。 E矢量方向由眼睛背缘区域的光感受器检测。来自双眼的偏振光信号最终被整合到中央复合体，这是一个由两个亚基组成的大脑区域，即原脑桥和中央体。在这里，我们展示了天顶 E 向量方向的地形表示是蝗虫原脑桥柱状组织的基础。类似地图的布置非常适合在开阔的天空下发出头部方向信号。
For many insects, the polarization pattern of the blue sky serves as a compass cue for spatial navigation. E-vector orientations are detected by photoreceptors in a dorsal rim area of the eye. Polarized-light signals from both eyes are finally integrated in the central complex, a brain area consisting of two subunits, the protocerebral bridge and the central body. Here we show that a topographic representation of zenithal E-vector orientations underlies the columnar organization of the protocerebral bridge in a locust. The maplike arrangement is highly suited to signal head orientation under the open sky.