Spencer Janine, O'Brien Justin, Johnston Alan, Hill Harold
Centre for Research in Infant Behaviour, Department of Human Sciences, Brunel University, Uxbridge, Middlesex, UK.
Perception. 2006;35(1):79-89. doi: 10.1068/p5379.
We report two experiments in which we used animated averaged faces to examine infants' ability to perceive and discriminate facial motion. The faces were generated by using the motion recorded from the faces of volunteers while they spoke. We tested infants aged 4-8 months to assess their ability to discriminate facial motion sequences (condition 1) and discriminate the faces of individuals (condition 2). Infants were habituated to one sequence with the motion of one actor speaking one phrase. Following habituation, infants were presented with the same sequence together with motion from a different actor (condition 1), or a new sequence from the same actor coupled with a new sequence from a new actor (condition 2). Infants demonstrated a significant preference for the novel actor in both experiments. These findings suggest that infants can not only discriminate complex and subtle biological motion cues but also detect invariants in such displays.
我们报告了两项实验,其中我们使用动画平均脸来检验婴儿感知和辨别面部运动的能力。这些脸是通过记录志愿者说话时面部的运动生成的。我们测试了4至8个月大的婴儿,以评估他们辨别面部运动序列的能力(条件1)和辨别个体面部的能力(条件2)。婴儿先习惯一个演员说一个短语时的一种面部运动序列。习惯化之后,向婴儿呈现相同的序列以及另一个演员的运动(条件1),或者同一个演员的新序列与另一个新演员的新序列(条件2)。在两项实验中,婴儿都表现出对新演员的显著偏好。这些发现表明,婴儿不仅能够辨别复杂和微妙的生物运动线索,还能在这类展示中检测到不变特征。