The fine structure of honeybee head and body yaw movements in a homing task
The fine structure of honeybee head and body yaw movements in a homing task
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DOI：
10.1098/rspb.2009.2326
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发表时间：
2010-06-22
影响因子：
4.7
通讯作者：
Egelhaaf, Martin
中科院分区：
文献类型：
--
作者：
Boeddeker, Norbert;Dittmar, Laura;Egelhaaf, Martin
蜜蜂转动他们的胸部，因此他们的飞行马达改变方向或侧向飞行。如果蜜蜂的头固定在它的胸部，这样的动作会对视力产生很大的影响。头部运动与胸部方向无关，可以稳定凝视，从而在塑造动物接受的视觉输入结构方面发挥重要和积极的作用。在这里，我们研究凝视和飞行控制如何在寻的任务中相互作用。我们使用高速视频设备来记录蜜蜂接近和离开位于室内飞行竞技场三个地标之间的食物源的头部和身体运动。在这些飞行过程中，蜜蜂的飞行轨迹由直线飞行段和快速转弯组成。这些短而快的偏航转弯(扫视)在大多数情况下伴随着比身体跳动早8毫秒开始的更快的头部偏航转弯。在眼跳之间，凝视稳定导致行为上消除了光流模式中的旋转成分，这有助于从运动视差中获得深度感知。
Honeybees turn their thorax and thus their flight motor to change direction or to fly sideways. If the bee's head were fixed to its thorax, such movements would have great impact on vision. Head movements independent of thorax orientation can stabilize gaze and thus play an important and active role in shaping the structure of the visual input the animal receives. Here, we investigate how gaze and flight control interact in a homing task. We use high-speed video equipment to record the head and body movements of honeybees approaching and departing from a food source that was located between three landmarks in an indoor flight arena. During these flights, the bees' trajectories consist of straight flight segments combined with rapid turns. These short and fast yaw turns (`saccades') are in most cases accompanied by even faster head yaw turns that start about 8 ms earlier than the body saccades. Between saccades, gaze stabilization leads to a behavioural elimination of rotational components from the optical flow pattern, which facilitates depth perception from motion parallax.