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Differentiation of Theta Visual Motion from Fourier Motion Requires LC16 and R18C12 Neurons in Drosophila.
iScience ( IF 4.447 ) Pub Date : 2020-04-08 , DOI: 10.1016/j.isci.2020.101041
Xiaoxiao Ji,Deliang Yuan,Hongying Wei,Yaxin Cheng,Xinwei Wang,Jihua Yang,Pengbo Hu,Julia Yvonne Gestrich,Li Liu,Yan Zhu

Many animals perceive features of higher-order visual motion that are beyond the spatiotemporal correlations of luminance defined in first-order motion. Although the neural mechanisms of first-order motion detection have become understood in recent years, those underlying higher-order motion perception remain unclear. Here, we established a paradigm to assess the detection of theta motion-a type of higher-order motion-in freely walking Drosophila. Behavioral screening using this paradigm identified two clusters of neurons in the central brain, designated as R18C12, which were required for perception of theta motion but not for first-order motion. Furthermore, theta motion-activated R18C12 neurons were structurally and functionally located downstream of visual projection neurons in lobula, lobula columnar cells LC16, which activated R18C12 neurons via interactions of acetylcholine (ACh) and muscarinic acetylcholine receptors (mAChRs). The current study provides new insights into LC neurons and the neuronal mechanisms underlying visual information processing in complex natural scenes.
更新日期:2020-04-08

 

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