Odour motion sensing enhances navigation of complex plumes.
Odour motion sensing enhances navigation of complex plumes.
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DOI：
10.1038/s41586-022-05423-4
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发表时间：
2022-11
期刊：
影响因子：
64.8
通讯作者：
Emonet, Thierry
中科院分区：
文献类型：
--
作者：
Kadakia, Nirag;Demir, Mahmut;Michaelis, Brenden T.;DeAngelis, Brian D.;Reidenbach, Matthew A.;Clark, Damon A.;Emonet, Thierry
野外的气味羽流是由湍流气流携带的空间复杂和快速波动的结构。为了成功地在羽毛中寻找食物和配偶，昆虫必须提取和整合气味信号的多种特征，包括气味的识别、强度和时间。有效的导航需要平衡这些多种嗅觉信息流，并将它们与其他感官输入（包括机械感官和视觉线索）整合在一起。一个世纪前的研究表明，在这些感官输入中，风为湍流羽流提供了主要的方向线索，从而形成了昆虫气味导航的长期模型，即气味引发的逆风运动。在这里，我们展示了果蝇利用额外的方向性线索——气味的运动方向——来形成它们的导航决策，它们利用两个触角之间气味信号的时间相关性来探测这些线索。利用高分辨率虚拟现实范式向自由行走的苍蝇传递时空复杂的虚构气味，我们证明了这种气味方向感知采用了类似于视觉方向感知的算法。结合模拟、理论和实验，我们表明气味运动包含有价值的方向信息，而气流本身没有，果蝇和虚拟代理在导航自然羽流时都得到了这些信息的帮助。我们研究结果的普遍性表明，气味方向感可能存在于整个动物王国，并可以改善嗅觉机器人在不确定环境中的导航。
Odor plumes in the wild are spatially complex and rapidly fluctuating structures carried by turbulent airflows. To successfully navigate plumes in search of food and mates, insects must extract and integrate multiple features of the odor signal, including odor identity, intensity, and timing. Effective navigation requires balancing these multiple streams of olfactory information and integrating them with other sensory inputs, including mechanosensory and visual cues. Studies dating back a century have indicated that, of these many sensory inputs, the wind provides the main directional cue in turbulent plumes, leading to the longstanding model of insect odor navigation as odor-elicited upwind motion. Here, we show that Drosophila shape their navigational decisions using an additional directional cue – the direction of motion of odors – which they detect using temporal correlations in the odor signal between their two antennae. Using a high-resolution virtual reality paradigm to deliver spatiotemporally complex fictive odors to freely-walking flies, we demonstrate that such odor direction sensing employs algorithms analogous to those in visual direction sensing. Combining simulations, theory, and experiments, we show that odor motion contains valuable directional information absent from the airflow alone, and that both Drosophila and virtual agents are aided by that information in navigating naturalistic plumes. The generality of our findings suggests that odor direction sensing may exist throughout the animal kingdom and could improve olfactory robot navigation in uncertain environments.
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影响因子：
7.7
作者：
Jayaram V;Kadakia N;Emonet T
通讯作者：
Emonet T
影响因子：
64.8
作者：
通讯作者：
--
影响因子：
7.7
作者：
Gorur-Shandilya, Srinivas;Demir, Mahmut;Emonet, Thierry
通讯作者：
Emonet, Thierry
DOI：
10.1016/j.cub.2009.06.022
发表时间：
2009-08-11
期刊：
Current biology : CB
影响因子：
--
作者：
Duistermars BJ;Chow DM;Frye MA
通讯作者：
Frye MA
影响因子：
2.8
作者：
Gorur-Shandilya, Srinivas;Martelli, Carlotta;Emonet, Thierry
通讯作者：
Emonet, Thierry