Research and Development Initiative, Chuo University, Hachioji-City, Tokyo, Japan.
Dev Psychobiol. 2014 Jan;56(1):109-16. doi: 10.1002/dev.21097. Epub 2012 Dec 31.
To examine young infants' sensitivity to a pictorial depth cue, we compared monocular and binocular preferential looking to objects of which depth was specified by height-in-the-picture-plane. For adults, this cue generates the perception that a lower object is closer than a higher object. This study showed that 4- and 5-month-old infants fixated the lower, apparently closer, figure more often under the monocular than binocular presentation providing evidence of their sensitivity to the pictorial depth cue. Because the displays were identical in the two conditions except for binocular information for depth, the difference in looking-behavior indicated sensitivity to depth information, excluding a possibility that they responded to 2D characteristics. This study also confirmed the usefulness of the method, preferential looking with a monocular and binocular comparison, to examine sensitivity to a pictorial depth cue in young infants, who are too immature to reach reliably for the closer of two objects.
为了研究婴儿对图像深度线索的敏感性，我们比较了单眼和双眼对图片中平面高度指示深度的物体的偏好性注视。对于成年人来说，这个线索会产生一种感知，即较低的物体比较高的物体更接近。本研究表明，4 至 5 个月大的婴儿在单眼呈现时比在双眼呈现时更多地注视下面的、显然更近的图形，这为他们对图像深度线索的敏感性提供了证据。因为两种情况下的显示是相同的，除了深度的双眼信息，所以在注视行为上的差异表明对深度信息的敏感性，排除了他们对 2D 特征做出反应的可能性。这项研究还证实了使用单眼和双眼比较的偏好性注视方法来研究婴儿对图像深度线索的敏感性的有效性，因为婴儿还太不成熟，无法可靠地伸手去够两个物体中较近的一个。
