Ventral motion parallax enhances fruit fly steering to visual sideslip

Ventral motion parallax enhances fruit fly steering to visual sideslip
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腹侧运动视差增强果蝇转向视觉侧滑

DOI:
10.1098/rsbl.2020.0046
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发表时间:
2020
期刊:
影响因子:
3.3
通讯作者:
Theobald, Jamie C.
Theobald, Jamie C.
中科院分区:
生物学2区
文献类型:
--
作者:
Ruiz, Carlos;Theobald, Jamie C.

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苍蝇和其他昆虫使用前后不连贯的运动(视差)来测量距离,并在平移过程中识别障碍物。虽然可以从下方获得额外的深度信息,但没有实验证明它们会使用它。绿头苍蝇在腹侧视野中编码运动差异的发现表明,这可能是深度信息的重要区域。我们使用了一个虚拟的飞行竞技场来测量果蝇对光流的反应。刺激出现在苍蝇下方(n= 51)或上方(n= 44),以不同的速度,有或没有视差线索。背视差不影响反应,旋转中的类似运动差异在视野中的任何地方都没有影响。但是,对强腹侧侧滑(206° s−1)的反应会根据视差的存在或不存在而发生剧烈变化。视差可以帮助解决混乱的运动场中的模糊性,并增强对附近物体的纠正反应。
Flies and other insects use incoherent motion (parallax) to the front and sides to measure distances and identify obstacles during translation. Although additional depth information could be drawn from below, there is no experimental proof that they use it. The finding that blowflies encode motion disparities in their ventral visual fields suggests this may be an important region for depth information. We used a virtual flight arena to measure fruit fly responses to optic flow. The stimuli appeared below (n= 51) or above the fly (n= 44), at different speeds, with or without parallax cues. Dorsal parallax does not affect responses, and similar motion disparities in rotation have no effect anywhere in the visual field. But responses to strong ventral sideslip (206° s−1) change drastically depending on the presence or absence of parallax. Ventral parallax could help resolve ambiguities in cluttered motion fields, and enhance corrective responses to nearby objects.
从光流中提取自我运动:精度和神经匹配滤波器的限制
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为了在飞行过程中保持正轨,果蝇会降低天空视野
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