Perception of chasing in squirrel monkeys (Saimiri sciureus)
Perception of chasing in squirrel monkeys (Saimiri sciureus)
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DOI：
10.1007/s10071-015-0893-x
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发表时间：
2015-11-01
期刊：
影响因子：
2.7
通讯作者：
Nagasaka, Yasuo
中科院分区：
文献类型：
--
作者：
Atsumi, Takeshi;Nagasaka, Yasuo
理解他人的意图对于发展积极的社会关系至关重要。比较人类和非人类动物的研究已经解决了这种能力的系统发育起源。然而，在非人类灵长类动物中，很少有研究探讨运动信息在区分他人意图和目标方面的重要性。这项研究探讨了松鼠猴是否能够感知目标导向的运动模式——特别是追逐——由两个几何物体表示。在实验1中，我们训练松鼠猴区分“追逐”序列和“随机”序列。然后，我们在探针测试中证实了这种歧视转移到新的刺激（“追逐”和“随机”）。为了确定猴子是否使用轨迹相似性来区分追逐和随机运动，我们还提出了一个非追逐的“克隆”序列，其中两个人物的轨迹相同。六只猴子中有三只能够区分“追逐”和其他序列。在实验2中，我们用实验1的刺激证实了人类对追逐的识别。在实验3中，实验1中识别能力没有转移到新刺激的三只猴子被训练区分“追逐”和“克隆”序列。在测试中，所有三只猴子都学会了区分追逐，其中两只将他们的学习转移到新的刺激上。我们的研究结果表明，松鼠猴使用目标导向的运动模式，而不是简单的轨迹相似性，来区分追逐。进一步的调查是必要的，以确定有助于这种歧视的运动特征。
Understanding the intentions of others is crucial in developing positive social relationships. Comparative human and non-human animal studies have addressed the phylogenetic origin of this ability. However, few studies have explored the importance of motion information in distinguishing others' intentions and goals in non-human primates. This study addressed whether squirrel monkeys (Saimiri sciureus) are able to perceive a goal-directed motion pattern-specifically, chasing-represented by two geometric objects. In Experiment 1, we trained squirrel monkeys to discriminate a "Chasing" sequence from a "Random" sequence. We then confirmed that this discrimination transferred to new stimuli ("Chasing" and "Random") in a probe test. To determine whether the monkeys used similarities of trajectory to discriminate chasing from random motion, we also presented a non-chasing "Clone" sequence in which the trajectories of the two figures were identical. Three of six monkeys were able to discriminate "Chasing" from the other sequences. In Experiment 2, we confirmed humans' recognition of chasing with the stimuli from Experiment 1. In Experiment 3, the three monkeys for which discrimination did not transfer to the new stimuli in Experiment 1 were trained to discriminate between "Chasing" and "Clone" sequences. At testing, all three monkeys had learned to discriminate chasing, and two transferred their learning to new stimuli. Our results suggest that squirrel monkeys use goal-directed motion patterns, rather than simply similarity of trajectory, to discriminate chasing. Further investigation is necessary to identify the motion characteristics that contribute to this discrimination.