在18个月大的婴儿中,在一个包含睡眠的时期内,对非相邻依赖的保留和概括的发育变化
Lucia M Sweeney1, Hatty Lara1, Rebecca L Gómez2
1Department of Psychology, the University of Arizona, Tucson, Arizona 85721, USA.
Learning & memory (Cold Spring Harbor, N.Y.)
|September 19, 2023
概括
18个月大的孩子在睡觉后保留了特定的记忆,与较年轻的婴儿不同. 睡眠也提高了他们将学习的语言模式概括为新短语的能力.
科学领域:
- 发展心理学 发展心理学
- 认知神经科学 认知神经科学
- 语言学的语言学.
背景情况:
- 睡眠对于成年人的记忆巩固至关重要,并且越来越多地认识到它对婴儿和儿童的好处.
- 之前的研究表明,15个月的孩子在午睡时保留了人工语言的一般规则,而不是特定的情况.
研究的目的:
- 调查睡眠对18个月大的婴儿记忆保留和非相邻依赖性 (NADs) 的概括的影响.
- 为了确定睡眠是否影响幼儿时期特定与抽象记忆表征的发展.
主要方法:
- 对18个月大的婴儿进行了两项实验,使用人工语言任务来训练非相邻依赖 (NAD).
- 实验1检查了睡眠延迟后特定NADs的记忆保留,复制了先前研究的午睡条件.
- 实验2评估了在睡眠或觉醒延迟后,学习到的NADs对新词汇的概括.
主要成果:
- 18个月的婴儿在包括睡眠在内的延迟期间表现出特定NADs的保留 (实验1).
- 只有在训练后打睡的婴儿才显示NAD规则对新词汇和新短语的概括 (实验2).
- 与清醒相比,睡眠在18个月大时便于形成抽象记忆,而不是具体记忆.
结论:
- 到了18个月,婴儿可以对睡眠期间的学习模式保留特定的记忆.
- 睡眠在促进幼儿抽象记忆的形成和语言规则的概括方面发挥着至关重要的作用.
- 这些发现表明,睡眠如何支持童年早期记忆巩固和抽象的发育转变.
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