Color processing in the medulla of the bumblebee (Apidae: Bombus impatiens).

Color processing in the medulla of the bumblebee (Apidae: Bombus impatiens).
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DOI:
10.1002/cne.21993
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发表时间:
2009-04-10
期刊:
The Journal of comparative neurology
影响因子:
--
通讯作者:
Gronenberg W
Gronenberg W
中科院分区:
其他
文献类型:
--
作者:
Paulk AC;Dacks AM;Gronenberg W

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处理视觉场景的机制包括在大脑内的不同阶段将特征(如颜色)分离到单独的信息通道中,处理这些特征,然后在大脑的更高级别整合这些信息。为了研究这一过程是如何在昆虫的大脑中发生的,我们专注于延髓,这是视叶中的一个区域,来自视网膜的所有视觉信息在进入中央大脑区域之前必须通过它。我们用组织学和免疫细胞化学技术对大黄蜂延髓进行了检查,发现延髓分为八层。然后,我们记录并从形态上鉴定了27个在延髓内有突起的神经元。在我们的记录中,我们提供了颜色提示,以确定反应类型是否与髓质层中填充的神经元的神经分支模式的位置相关。与内髓层神经元相比,外延髓层神经元的颜色反应不那么复杂,各层之间的反应在时间动力学上也存在差异。从外延髓到内延髓,不同层的神经元似乎处理自然视觉场景中日益复杂的方面。
The mechanisms of processing a visual scene involve segregating features (such as color) into separate information channels at different stages within the brain, processing these features, and then integrating this information at higher levels in the brain. To examine how this process takes place in the insect brain, we focused on the medulla, an area within the optic lobe through which all of the visual information from the retina must pass before it proceeds to central brain areas. We used histological and immunocytochemical techniques to examine the bumblebee medulla and found that the medulla is divided into eight layers. We then recorded and morphologically identified 27 neurons with processes in the medulla. During our recordings, we presented color cues to determine whether response types correlated with locations of the neural branching patterns of the filled neurons among the medulla layers. Neurons in the outer medulla layers had less complex color responses compared to neurons in the inner medulla layers and there were differences in the temporal dynamics of the responses among the layers. Progressing from the outer to the inner medulla, neurons in the different layers appear to process increasingly complex aspects of the natural visual scene.
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发表时间: 2005-05-01
影响因子: 1.9
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通讯作者: Strausfeld, NJ
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影响因子: --
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影响因子: 2.5
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DOI: 10.1007/s00359-006-0185-7
发表时间: 2007-02-01
影响因子: 2.1
作者:
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通讯作者: Strausfeld, Nicholas J.