Left gaze bias in humans, rhesus monkeys and domestic dogs
Left gaze bias in humans, rhesus monkeys and domestic dogs
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DOI：
10.1007/s10071-008-0199-3
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发表时间：
2009-05-01
期刊：
影响因子：
2.7
通讯作者：
Mills, Daniel
中科院分区：
文献类型：
--
作者：
Guo, Kun;Meints, Kerstin;Mills, Daniel
当观看面部时，人类成年人通常表现出朝向左视野的自然注视偏向，即，通常首先并且更长时间地检查受检者面部的右侧。使用优先寻找范式，我们证明，这种偏见既不是人类独有的，也不限于灵长类动物，并提供证据，以帮助阐明其在更广泛的社会认知框架内的生物学功能。我们观察到，6个月大的婴儿对不同物种和方向的物体和面孔表现出更广泛的左凝视偏好倾向，而在成年人中，这种偏见只出现在直立的人脸上。恒河猴对直立的人和猴的脸表现出左凝视偏向，但对倒置的脸没有。然而，家犬只表现出对人脸的左注视偏向，而对猴子或狗的脸，也没有对无生命物体的图像。我们的研究结果表明，面部和物种敏感的凝视不对称在动物王国中比以前认识到的更普遍，不受注意力或扫描偏见的限制，并且可以通过经验来塑造，以发展适应性行为意义。
While viewing faces, human adults often demonstrate a natural gaze bias towards the left visual field, that is, the right side of the viewee's face is often inspected first and for longer periods. Using a preferential looking paradigm, we demonstrate that this bias is neither uniquely human nor limited to primates, and provide evidence to help elucidate its biological function within a broader social cognitive framework. We observed that 6-month-old infants showed a wider tendency for left gaze preference towards objects and faces of different species and orientation, while in adults the bias appears only towards upright human faces. Rhesus monkeys showed a left gaze bias towards upright human and monkey faces, but not towards inverted faces. Domestic dogs, however, only demonstrated a left gaze bias towards human faces, but not towards monkey or dog faces, nor to inanimate object images. Our findings suggest that face- and species-sensitive gaze asymmetry is more widespread in the animal kingdom than previously recognised, is not constrained by attentional or scanning bias, and could be shaped by experience to develop adaptive behavioural significance.