Neurophysiological signatures of approximate number system acuity in preschoolers

IF 3.4 Q2 NEUROSCIENCES Trends in Neuroscience and Education Pub Date : 2023-03-01 DOI:10.1016/j.tine.2022.100197
Michal Pinhas , David J. Paulsen , Marty G. Woldorff , Elizabeth M. Brannon
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引用次数: 1

Abstract

Background

A hallmark of the approximate number system (ANS) is ratio dependence. Previous work identified specific event-related potentials (ERPs) that are modulated by numerical ratio throughout the lifespan. In adults, ERP ratio dependence was correlated with the precision of the numerical judgments with individuals who make more precise judgments showing larger ratio-dependent ERP effects. The current study evaluated if this relationship generalizes to preschoolers.

Method

ERPs were recorded from 56 4.5 to 5.5-year-olds while they compared the numerosity of two sequentially presented dot arrays. Nonverbal numerical precision, often called ANS acuity, was assessed using a similar behavioral task.

Results

Only children with high ANS acuity exhibited a P2p ratio-dependent effect onsetting ∼250 ms after the presentation of the comparison dot array. Furthermore, P2p amplitude positively correlated with ANS acuity across tasks.

Conclusion

Results demonstrate developmental continuity between preschool years and adulthood in the neural basis of the ANS.

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学龄前儿童近似数字系统敏锐度的神经生理特征
背景近似数系统(ANS)的一个标志是比率依赖性。先前的工作确定了特定的事件相关电位(ERP),这些电位在整个生命周期中都受到数值比率的调节。在成年人中,ERP比率依赖性与数字判断的准确性相关,做出更精确判断的个体表现出更大的比率依赖性ERP效应。目前的研究评估了这种关系是否适用于学龄前儿童。方法记录56名4.5至5.5岁儿童的ERP,同时比较两个顺序排列的点阵的数量。非语言数字精度,通常称为ANS敏锐度,使用类似的行为任务进行评估。结果只有高ANS敏锐度的儿童在显示对比点阵后~250ms才表现出P2p比率依赖性效应。此外,P2p振幅与任务中ANS的敏锐度呈正相关。结论研究结果表明,在ANS的神经基础上,学龄前和成年期的发育是连续的。
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来源期刊
CiteScore
6.30
自引率
6.10%
发文量
22
审稿时长
65 days
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