Visual Control of Walking Speed in Drosophila.
Visual Control of Walking Speed in Drosophila.
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DOI:
10.1016/j.neuron.2018.10.028
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发表时间:
2018-12-19
期刊:
影响因子:
16.2
通讯作者:
Clark DA
中科院分区:
文献类型:
--
作者:
Creamer MS;Mano O;Clark DA
An animal’s self-motion generates optic flow across its retina, and it can use this visual signal to regulate its orientation and speed through the world. While orientation control has been studied extensively in Drosophila and other insects, much less is known about the visual cues and circuits that regulate translational speed. Here we show that flies regulate walking speed with an algorithm that is tuned to the speed of visual motion, causing them to slow when visual objects are nearby. This regulation does not depend strongly on the spatial structure or the direction of visual stimuli, making it algorithmically distinct from the classical computation that controls orientation. Despite the different algorithms, the visual circuits that regulate walking speed overlap with those that regulate orientation. Taken together, our findings suggest that walking speed is controlled by a hierarchical computation that combines multiple motion detectors with distinct tunings. During navigation, animals regulate both rotation and translation. Creamer et al. investigated how visual motion cues regulate walking speed in Drosophila. They found that orientation and walking speed are stabilized by algorithms with distinct tunings but employ overlapping circuitry.
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影响因子:
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作者:
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DOI:
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发表时间:
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期刊:
JOURNAL OF COMPARATIVE PHYSIOLOGY
影响因子:
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