HEAD ORIENTATION IN PIGEONS - POSTURAL, LOCOMOTOR AND VISUAL DETERMINANTS
HEAD ORIENTATION IN PIGEONS - POSTURAL, LOCOMOTOR AND VISUAL DETERMINANTS
复制标题
DOI：
10.1159/000115935
复制
发表时间：
1989-05-01
影响因子：
1.7
通讯作者：
PHILLIPS, SJ
中科院分区：
文献类型：
--
作者：
ERICHSEN, JT;HODOS, W;PHILLIPS, SJ
我们已经确定了鸽子的头部方向，用于两种姿势和两种不涉及特定视觉刺激的运动活动。我们使用高速电影摄像机拍摄了四只鸽子（Columba livia）（1）飞行、（2）行走、（3）栖息和（4）站在平坦表面上的情况。在这些条件下，头部方向相对恒定，使我们能够估计视野的正常水平线，从而估计视网膜的水平子午线。外侧半规管的测量显示，根据胶片分析确定的头部方向，半规管相对于地平线略微向上倾斜。与运动过程中相对稳定的头部姿势相反，鸽子在看到种子目标时不断改变头部方向，显然是为了用喙尖周围的一小部分视野来固定每颗种子。
We have determined the pigeon''s head orientation for two posture and two locomotor activities that do not involve a specific visual stimulus. Using a high-speed cine camera, we filmed four pigeons (Columba livia) while (1) flying, (2) walking, (3) perching and (4) standing on a flat surface. Under these conditions, the head orientation is relatively constant, allowing us to estimate the normal horizon of the visual field and thus the horizontal meridian of the retina. Measurements of the lateral semicircular canal showed that the canal is tilted slightly up with respect to the horizon in the head orientation determined by the film analysis. In contrast to their relatively stable head posture during locomotion, the pigeons consistently altered their head orientation when presented with seed targets, apparently to fixate each seed with a small portion of the visual field around the bill tip.