Aix-Marseille Université, CNRS, ISM, 13009, Marseille, France.
PNI, Princeton University, Washington Road, Princeton, NJ, 08540, USA.
Sci Rep. 2023 Apr 15;13(1):6138. doi: 10.1038/s41598-023-33302-z.
We study how falling hoverflies use sensory cues to trigger appropriate roll righting behavior. Before being released in a free fall, flies were placed upside-down with their legs contacting the substrate. The prior leg proprioceptive information about their initial orientation sufficed for the flies to right themselves properly. However, flies also use visual and antennal cues to recover faster and disambiguate sensory conflicts. Surprisingly, in one of the experimental conditions tested, hoverflies flew upside-down while still actively flapping their wings. In all the other conditions, flies were able to right themselves using two roll dynamics: fast ([Formula: see text]50ms) and slow ([Formula: see text]110ms) in the presence of consistent and conflicting cues, respectively. These findings suggest that a nonlinear sensory integration of the three types of sensory cues occurred. A ring attractor model was developed and discussed to account for this cue integration process.
我们研究了坠落的悬停蝇如何利用感觉线索来触发适当的滚动翻转行为。在自由落体之前，将苍蝇倒置放置，让它们的腿接触到基质。腿的本体感觉信息足以让苍蝇正确地翻转过来。然而，苍蝇也会使用视觉和触角线索来更快地恢复并消除感觉冲突。令人惊讶的是，在测试的一个实验条件中，悬停蝇在翅膀仍在拍打时倒着飞行。在所有其他条件下，苍蝇都能够使用两种滚动动力学来翻转：在一致和冲突线索的存在下，快速（[公式：见文本]50ms）和缓慢（[公式：见文本]110ms）。这些发现表明，三种感觉线索的非线性感觉整合发生了。开发并讨论了一个环形吸引子模型来解释这个线索整合过程。
