Patterns of Looking Behavior in Full‐Term and Low Birth Weight Infants at 40 Weeks Post‐Conceptional Age
Patterns of Looking Behavior in Full‐Term and Low Birth Weight Infants at 40 Weeks Post‐Conceptional Age
复制标题
足月婴儿和低出生体重婴儿在受孕后 40 周时的注视行为模式
DOI：
10.1097/00004703-198510000-00011
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发表时间：
1985
影响因子：
2.4
通讯作者：
H. Vaughan
中科院分区：
文献类型：
--
作者：
L. B. Spungen;D. Kurtzberg;H. Vaughan
鉴于视觉行为作为一种评估方法在大龄婴儿中的有效性，一种适用于临床环境的简单的视觉行为评估方法被用来收集42名足月婴儿的描述性数据。采用婴儿对照的方法确定刺激呈现的持续时间，对25名健康足月(FT)和17名低出生体重儿(LBW)在40周后提出了一系列四种模式的目标。婴儿在他们的婴儿床上接受检查，每个刺激都被呈现，直到婴儿达到观看时间减少50%或更多的标准。与FT婴儿相比，LBW婴儿看起来时间更长，没有停顿；LBW婴儿的平均试验时间是FTs婴儿的两倍。尽管LBW组的总观察时间更长，但LBW婴儿达到第一个目标的减少标准所需的时间是FTs的两倍，因此看到的目标比FT婴儿少。尽管LBW婴儿的注视时间更长，但只有41%的婴儿在接受新刺激时注视时间增加，而FT组的这一比例为56%。LBW婴儿的视觉行为质量更多地表现为长时间、连续地盯着相同的图案，相比之下，FT新生儿的视觉行为质量更短、更离散、迅速减少。虽然群体内的差异很大，但视觉行为的不同模式被认为可能反映了信息处理的差异，可能与视觉系统的完整性或成熟度的差异有关。
Given the usefulness of visual behavior as an assessment method in older infants, a simple method of visual behavioral evaluation applicable in clinical settings was utilized to gather descriptive data on 42 infants at term. Using an “infant control” method for determining the duration of stimulus presentation, a series of four patterned targets was presented to 25 healthy full-term (FT) and 17 low birth weight (LBW) infants at 40 weeks postconceptional age. Infants were examined in their nursery cribs, and each stimulus was presented until the infant reached a criterion of a 50% or greater decrement in looking time. LBW infants looked for longer time periods, without pause, than FT infants; LBW mean trial length was twice that of FTs. Although total looking time was longer for the LBW group, LBW infants took twice the length of time as FTs to reach the decrement criterion for the first target and thus viewed fewer targets than FT infants. Despite the longer looking of LBW infants, only 41%, as compared to 56% of the FT group, showed an increase in looking time when a new stimulus was presented. The quality of LBW infants' visual behavior was more often marked by long, continuous looking at the same pattern, in contrast to shorter, more discrete and rapidly decrementing looks by the FT newborn. While there was a large variability within groups, the differential patterns of visual behavior are considered likely to reflect variations in processing of information, possibly associated with differences in integrity or maturation of the visual system.