期刊
DEVELOPMENTAL PSYCHOBIOLOGY
卷 44, 期 4, 页码 219-229出版社
WILEY
DOI: 10.1002/dev.20005
关键词
rat fetus, facial wiping; interlimb coordination; fetal behavior; prenatal development
资金
- NICHD NIH HHS [R01 HD033862, HD 33862] Funding Source: Medline
Fetal rats reliably express a facial wiping response to novel chemosensory stimuli. Previous research has examined facial wiping as all early form of motor coordination and as a behavioral indicator of sensory responsiveness. The present study examined how variation in stimulus parameters of lemon odor infusion (concentration, volume, and infusion time) affected the wiping response of E20 rat fetuses. Infusions of higher concentration or greater volume generally elicited wiping responses of greater duration and more strokes. Most facial wipes involved strokes by single forelimbs; however, bilaterally synchronous wiping was expressed only in bouts of at least seven wipes, and was facilitated by stimuli of moderate intensity These findings suggest that the total number of wiping strokes or bout duration are well suited as measures of overall sensory responsiveness in the fetus and that chemosensory, stimulus parameters exert a permissive influence on interlimb coordination during a bout of facial wiping. (C) 2004 Wiley Periodicals, Inc.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据