Domestic dogs' (Canis familiaris) understanding of Projected Video Images of a Human Demonstrator in an Object-choice Task
Domestic dogs' (Canis familiaris) understanding of Projected Video Images of a Human Demonstrator in an Object-choice Task
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DOI：
10.1111/eth.12131
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发表时间：
2013-10-01
期刊：
影响因子：
1.7
通讯作者：
Pongracz, Peter
中科院分区：
文献类型：
--
作者：
Peter, Andras;Miklosi, Adam;Pongracz, Peter
向动物呈现人工视觉刺激是最近许多行为实验的关键要素，主要是因为图像比现场演示更容易控制和操纵。确定动物如何处理图像对于能够正确解释受试者对这些刺激的反应至关重要。在这项研究中，我们的目的是使用Fagot埃塔尔提出的框架。等人（2010）Proc.Natl. Acad. Sci. USA 107，519对狗如何感知真人大小的投影视频进行分类。首先，我们测试了狗是否可以使用预先录制的，因此是非交互式的，人类的视频片段来定位三路选择任务中隐藏的奖励。其次，我们调查了狗是否通过参照理解解决这个任务。为了实现这一点，我们将视频投影的位置与狗必须搜索隐藏奖励的位置分开。我们的研究结果证实，狗可以可靠地使用预先录制的视频作为信息来源的人时，示范和隐藏位置是在同一个房间。然而，当隐藏地点在一个单独的房间里时，他们并没有找到高于几率水平的隐藏物。不过，进一步的分析发现，对投射的关注与狗的成功率之间存在正相关。这一发现表明，限制狗表现的因素是它们的注意力，经过进一步的训练，它们可能能够掌握涉及参照理解的任务。
Presenting animals with artificial visual stimuli is a key element of many recent behavioral experiments largely because images are easier to control and manipulate than live demonstrations. Determining how animals process images is crucial for being able to correctly interpret subjects' reactions toward these stimuli. In this study, we aimed to use the framework proposed by Fagot etal. (2010) Proc. Natl. Acad. Sci. USA 107, 519 to classify how dogs perceive life-sized projected videos. First, we tested whether dogs can use pre-recorded and hence non-interactive, video footage of a human to locate a hidden reward in a three-way choice task. Secondly, we investigated whether dogs solve this task by means of referential understanding. To achieve this, we separated the location of the video projection from the location where dogs had to search for the hidden reward. Our results confirmed that dogs can reliably use pre-recorded videos of a human as a source of information when the demonstration and the hiding locations are in the same room. However, they did not find the hidden object above the chance level when the hiding locations were in a separate room. Still, further analysis found a positive connection between the attention paid to the projection and the success rate of dogs. This finding suggests that the factor limiting dogs' performance was their attention and that with further training they might be able to master tasks involving referential understanding.