Low speed maneuvering flight of the rose-breasted cockatoo (Eolophus roseicapillus).: I.: Kinematic and neuromuscular control of turning
Low speed maneuvering flight of the rose-breasted cockatoo (Eolophus roseicapillus).: I.: Kinematic and neuromuscular control of turning
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DOI：
10.1242/jeb.002055
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发表时间：
2007-06-01
影响因子：
2.8
通讯作者：
Biewener, A. A.
中科院分区：
文献类型：
--
作者：
Hedrick, T. L.;Biewener, A. A.
机动飞行长期以来被认为是许多鸟类自然行为的重要组成部分，但很少有实验研究。在这里，我们研究的运动学和神经肌肉控制的转向飞行的玫瑰胸凤头鹦鹉Eolophus roseicapillus（N=6），测试预测的机动飞行和控制的基础上，空气动力学理论和以前的运动学和神经肌肉的研究。六只凤头鹦鹉被训练在L形飞行走廊的两个栖木之间导航，每次飞行中途都要转弯90度。飞行记录与三个同步的高速摄像机放置在走廊外，允许通过转弯的机翼和身体运动学的三维重建。我们同时收集了双侧植入物在胸大肌、喙上肌、肱二头肌和桡侧掌伸肌的肌电图记录。凤头鹦鹉使用拍打，倾斜转弯，平均转弯半径为0.92米。在一个完整的翼拍过程中，航向的平均变化率在整个转弯过程中变化，并与中下行程时的滚转角显著相关。滚转角的变化被发现包括两个内wingbeat和不承担彼此没有直接关系的wingbeat组件。翼拍内滚转的变化主要受惯性效应的影响，而翼拍内滚转的变化可能是惯性效应和气动力效应共同作用的结果。
Maneuvering flight has long been recognized as an important component of the natural behavior of many bird species, but has been the subject of little experimental work. Here we examine the kinematics and neuromuscular control of turning flight in the rose-breasted cockatoo Eolophus roseicapillus (N=6), testing predictions of maneuvering flight and control based on aerodynamic theory and prior kinematic and neuromuscular studies. Six cockatoos were trained to navigate between two perches placed in an L-shaped flight corridor, making a 90 degrees turn midway through each flight. Flights were recorded with three synchronized high-speed video cameras placed outside the corridor, allowing a three-dimensional reconstruction of wing and body kinematics through the turn. We simultaneously collected electromyography recordings from bilateral implants in the pectoralis, supracoracoideus, biceps brachii and extensor metacarpi radialis muscles. The cockatoos maneuvered using flapping, banked turns with an average turn radius of 0.92 m. The mean rate of change in heading during a complete wingbeat varied through the turn and was significantly correlated to roll angle at mid-downstroke. Changes in roll angle were found to include both within-wingbeat and among-wingbeat components that bear no direct relationship to one another. Within-wingbeat changes in roll were dominated by the inertial effects while among-wingbeat changes in roll were likely the result of both inertial and aerodynamic effects.