SPEED DISCRIMINATION IN 20-WEEK-OLD INFANTS

被引：11

作者：

DANNEMILLER, JL

FREEDLAND, R

机构：

[1] University of Wisconsin, Madison

来源：

INFANT BEHAVIOR & DEVELOPMENT | 1991年 / 14卷 / 02期

关键词：

VISION; MOTION; SPEED; DISCRIMINATION;

D O I：

10.1016/0163-6383(91)90003-B

中图分类号：

B844 [发展心理学（人类心理学）];

学科分类号：

040202 ;

摘要：

Discrimination of the speeds of two adjacent moving bars was studied in 20-week-old infants. Speeds ranging from 2 to 10°/s were used. Logistic regression was used to predict the side of the screen with the faster moving bar given the multiple observed dependent variables on each trial. Group psychometric functions showed approximate Weber fractions for speed discrimination near .35 at 3.3°/s and .67 at 10.0°/s. The results provide psychophysical evidence for speed discrimination by 20-week-olds and are discussed in terms of their implications for various visuomotor functions. © 1991.

引用

页码：163 / 173

页数：11

共 14 条

[11] FORCED-CHOICE PREFERENTIAL LOOKING PROCEDURE - PSYCHOPHYSICAL TECHNIQUE FOR USE WITH HUMAN INFANTS [J].