An invisible sign stimulus: completion of occluded visual images in the Bengalese finch in an ecological context.
An invisible sign stimulus: completion of occluded visual images in the Bengalese finch in an ecological context.
复制标题
看不见的信号刺激：孟加拉雀在生态环境中完成被遮挡的视觉图像。
作者：
M. Takahasi;K. Okanoya
包含被遮挡部分的对象有时会被视为完整的图像，这种现象称为非模态或视觉完成。符号刺激是引发行为的最小信息集，但这个概念提出了这样的问题：当动物看不到被遮挡的符号刺激时，它们是否会参与该行为，但它们可以在视觉上完成它。雄性孟加拉雀对雌性雀的视频图像进行求爱行为。我们对孟加拉雀进行了三项实验，以展示生态背景下的符号刺激和视觉完成功能。我们使用雌性雀鸟记录的三种视觉图像作为刺激：头部、身体和整体。结果表明，雄性孟加拉雀对头部遮挡的刺激表现出求爱行为，而对无头的身体图像则没有。结果表明，雄性通过视觉完成过程完成了这种被遮挡的信号刺激。接触符号刺激与视觉完成过程相结合可以协同作用，以促进在信息有限的情况下的适应性反应。
An object that includes occluded parts is sometimes perceived as a complete image and this phenomenon is known as amodal or visual completion. A sign stimulus is a minimum set of information that elicits a behavior, but this notion raises questions about whether animals ever engage in the behavior when they cannot see the occluded sign stimulus, but they can visually complete it. Male Bengalese finches engage in courtship behavior toward video images of female finches. We conducted three experiments with Bengalese finches to show both sign stimuli and visual completion function in an ecological context. We used three types of visual images recorded from female finches as stimuli: the head, the body, and the whole. Results showed that male Bengalese finches showed courtship behavior toward the head-occluded stimuli whereas they did not toward the headless body image. The results imply that the males completed this occluded sign stimulus through the process of visual completion. Exposure to a sign stimulus combined with the process of visual completion may operate cooperatively to facilitate adaptive responses under conditions of limited information.