Facial expression recognition in crested macaques (Macaca nigra)
Facial expression recognition in crested macaques (Macaca nigra)
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DOI：
10.1007/s10071-015-0867-z
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发表时间：
2015-07-01
期刊：
影响因子：
2.7
通讯作者：
Waller, Bridget M.
中科院分区：
文献类型：
--
作者：
Micheletta, Jerome;Whitehouse, Jamie;Waller, Bridget M.
面部表情是许多不同种类的灵长类动物使用的主要交流渠道。尽管如此，我们对灵长类动物如何区分不同的面部表情知之甚少，而且我们所知道的大部分来自有限数量的经过充分研究的物种。在这项研究中，三只凤头猕猴（Macaca nigra）参加了样本匹配任务，它们必须区分不同的面部表情。在第一个实验中，猕猴必须将面部表情的照片与不同个体产生的相同表情的另一个样本进行匹配，并与其他三种表情类型之一和中性面孔的示例进行匹配。在第二个实验中，他们必须将面部表情的动态视频记录与另一个人产生的相同面部表情的另一个样本的静态照片进行匹配，也是针对其他四种表情之一。猕猴在这两项任务中的表现都高于偶然性，无论个体身份如何，它们都能将表情识别为属于同一类别。使用矩阵相关性和多维缩放，我们分析了错误的模式，看看是否整体相似的面部表情和/或特定的形态特征造成的猕猴混淆面部表情。整体相似性，猕猴面部动作编码系统（maqFACS）测量，并没有与性能。相反，面部表情之间的功能相似性可能是观察到的错误模式的原因。这些结果扩展了以前的研究结果，以一种新的灵长类动物物种，并强调了使用视频刺激来研究灵长类动物视觉信号的感知和分类的潜力。
Facial expressions are a main communication channel used by many different species of primate. Despite this, we know relatively little about how primates discriminate between different facial expressions, and most of what we do know comes from a restricted number of well-studied species. In this study, three crested macaques (Macaca nigra) took part in matching-to-sample tasks where they had to discriminate different facial expressions. In a first experiment, the macaques had to match a photograph of a facial expression to another exemplar of the same expression produced by a different individual, against examples of one of three other types of expressions and neutral faces. In a second experiment, they had to match a dynamic video recording of a facial expression to a still photograph of another exemplar of the same facial expression produced by another individual, also against one of four other expressions. The macaques performed above chance in both tasks, identifying expressions as belonging to the same category regardless of individual identity. Using matrix correlations and multidimensional scaling, we analysed the pattern of errors to see whether overall similarity between facial expressions and/or specific morphological features caused the macaques to confuse facial expressions. Overall similarity, measured with the macaque facial action coding system (maqFACS), did not correlate with performances. Instead, functional similarities between facial expressions could be responsible for the observed pattern of error. These results expand previous findings to a novel primate species and highlight the potential of using video stimuli to investigate the perception and categorisation of visual signals in primates.