6个月大婴儿的轮廓整合：对不同轮廓形状的辨别

Contour integration by 6-month-old infants: discrimination of distinct contour shapes.

作者信息

Baker Thomas J, Tse James, Gerhardstein Peter, Adler Scott A

机构信息

Department of Psychology, York University, 333 Behavioral Sciences Building, 4700 Keele Street, Toronto, Ont., Canada M3J 1P3.

出版信息

Vision Res. 2008 Jan;48(1):136-48. doi: 10.1016/j.visres.2007.10.021.

DOI:10.1016/j.visres.2007.10.021

PMID:18093632

Abstract

Previous research has indicated that the ability to integrate individual elements in the presence of noise is immature in 3-month-old infants. The present study extended the developmental timeline by investigating 6-month-olds' ability to integrate individual elements into whole contours through an assessment of their capability to discriminate circle and square contours constructed from oriented Gabor patches via a newly designed cueing paradigm for infants. If infants discriminate the centrally-presented contour cues, then their eye movements would correctly anticipate subsequent target presentation at a rate greater than chance. The results indicated that infants integrated the contours and discriminated the different shapes, but, consistent with past research, this ability is still fairly immature at this age, tolerating limited amount of noise.

摘要

先前的研究表明，3个月大的婴儿在有噪音的情况下整合单个元素的能力尚不成熟。本研究通过一项新设计的针对婴儿的提示范式，评估6个月大婴儿将单个元素整合为完整轮廓的能力，即辨别由定向Gabor斑块构成的圆形和方形轮廓的能力，从而延长了发育时间表。如果婴儿能够辨别中央呈现的轮廓线索，那么他们的眼球运动将以高于随机概率的速率正确预测后续目标的呈现。结果表明，婴儿能够整合轮廓并辨别不同形状，但与过去的研究一致，这种能力在这个年龄段仍然相当不成熟，只能容忍有限的噪音量。