Discrimination of speed in 5-year-olds and adults: Are children up to speed?

被引：33
作者：
Ahmed, IJ
Lewis, TL
Ellemberg, D
Maurer, D
机构：
[1] McMaster Univ, Dept Psychol, Hamilton, ON L8S 4K1, Canada
[2] Univ Toronto, Dept Ophthalmol, Toronto, ON M5S 1A1, Canada
[3] Univ Montreal, Dept Kinesiol, Montreal, PQ, Canada
来源：
VISION RESEARCH | 2005年 / 45卷 / 16期
基金：
加拿大自然科学与工程研究理事会; 加拿大健康研究院;
关键词：
visual development; speed discrimination; children; adults;
D O I：
10.1016/j.visres.2005.01.036
中图分类号：
Q189 [神经科学];
学科分类号：
071006 ;
摘要：
We compared thresholds for discriminating changes in speed by 5-year-olds and adults for two reference speeds: 1.5 and 6 degrees s(-1). Both adults and 5-year-olds were more sensitive to changes from the faster than from the slower reference speed. Five-year-olds were less sensitive than adults at both reference speeds but significantly more immature at the slower (1.5 degrees s(-1)) than at the faster (6 degrees s(-1)) reference speed. The findings suggest that the mechanisms underlying speed discrimination are immature in 5-year-olds, especially those that process slower speeds. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2129 / 2135
页数：7
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