Odour boosts visual object approach in flies.

Odour boosts visual object approach in flies.
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气味促进苍蝇的视觉物体接近。

DOI:
10.1098/rsbl.2020.0770
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发表时间:
2021-03
期刊:
影响因子:
3.3
通讯作者:
Frye MA
Frye MA
中科院分区:
生物学2区
文献类型:
--
作者:
Cheng KY;Frye MA

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多感觉整合是协同作用的,来自一种感觉方式的输入可能会调节对另一种感觉方式的行为反应。对苍蝇的研究表明,在飞行中,一个出现在周围的小视觉物体会激发先天的厌恶性转向反应,可能代表一种接近的威胁。当闻到食物的气味时,对物体的厌恶就会转变为接近。先前工作的"开环"设计便于观察变化的化合价。当一个动物对它的视觉体验有自然的主动控制时,气味是如何影响视觉对象反应的?在这项研究中,我们使用闭环反馈条件,其中苍蝇的转向努力耦合到视觉刺激的角速度,以确认苍蝇转向或“固定”在视觉中线上的一条长的垂直条纹。他们倾向于避开或“antifixate”一个小物体或脱离主动视觉控制,这表现为不受控制的对象“旋转”在这个实验范式。加入一股苹果醋会降低反注视和旋转的概率,同时增加对任何大小物体的正面注视的概率,包括通常令人厌恶的小物体。
Multisensory integration is synergistic—input from one sensory modality might modulate the behavioural response to another. Work in flies has shown that a small visual object presented in the periphery elicits innate aversive steering responses in flight, likely representing an approaching threat. Object aversion is switched to approach when paired with a plume of food odour. The ‘open-loop’ design of prior work facilitated the observation of changing valence. How does odour influence visual object responses when an animal has naturally active control over its visual experience? In this study, we use closed-loop feedback conditions, in which a fly's steering effort is coupled to the angular velocity of the visual stimulus, to confirm that flies steer toward or ‘fixate’ a long vertical stripe on the visual midline. They tend either to steer away from or ‘antifixate’ a small object or to disengage active visual control, which manifests as uncontrolled object ‘spinning’ within this experimental paradigm. Adding a plume of apple cider vinegar decreases the probability of both antifixation and spinning, while increasing the probability of frontal fixation for objects of any size, including a normally typically aversive small object.
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