Distinct memory traces for two visual features in the Drosophila brain
Distinct memory traces for two visual features in the Drosophila brain
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DOI：
10.1038/nature04381
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发表时间：
2006-02-02
期刊：
影响因子：
64.8
通讯作者：
Liu, L
中科院分区：
文献类型：
--
作者：
Liu, G;Seiler, H;Liu, L
黑腹果蝇（Drosophila melanogaster）可以辨别和记忆视觉地标。它根据少量的图案参数，如尺寸、颜色或轮廓方向，分析其视觉环境的选定部分，并存储特定的参数值。与人类一样，果蝇在获得图案的过程中独立于视网膜位置识别图案（平移不变性）。在这里，我们表明，苍蝇大脑的中心部分，扇形的身体，包含一个网络调解视觉模式识别的部分。我们已经确定了两个模式参数的短期记忆痕迹-海拔全景和轮廓方向。这些可以定位于两组神经元，它们在扇形体中作为平行的水平层延伸分支。这种记忆存储的中心位置非常适合于调解平移不变性。
The fly Drosophila melanogaster can discriminate and remember visual landmarks. It analyses selected parts of its visual environment according to a small number of pattern parameters such as size, colour or contour orientation, and stores particular parameter values. Like humans, flies recognize patterns independently of the retinal position during acquisition of the pattern ( translation invariance). Here we show that the central-most part of the fly brain, the fan-shaped body, contains parts of a network mediating visual pattern recognition. We have identified short-term memory traces of two pattern parameters - elevation in the panorama and contour orientation. These can be localized to two groups of neurons extending branches as parallel, horizontal strata in the fan-shaped body. The central location of this memory store is well suited to mediate translational invariance.