Abstract
AbstractGrammar learning requires memory for dependencies between nonadjacent elements in speech. Immediate learning of nonadjacent dependencies has been observed in very young infants, but their memory of such dependencies has remained unexplored. Here we used event-related potentials to investigate whether 6- to 8-month-olds retain nonadjacent dependencies and if sleep after learning affects this memory. Infants were familiarised with two rule-based morphosyntactic dependencies, presented in sentences of an unknown language. Brain responses after a retention period reveal memory of the nonadjacent dependencies, independent of whether infants napped or stayed awake. Napping, however, altered a specific processing stage, suggesting that memory evolves during sleep. Infants with high left frontal spindle activity show an additional brain response indicating memory of individual speech phrases. Results imply that infants as young as 6 months are equipped with memory mechanisms relevant to grammar learning. They also suggest that during sleep, consolidation of highly specific information can co-occur with changes in the nature of generalised memory.
Funder
Deutsche Forschungsgemeinschaft
Publisher
Springer Science and Business Media LLC
Subject
General Physics and Astronomy,General Biochemistry, Genetics and Molecular Biology,General Chemistry,Multidisciplinary
Reference53 articles.
1. Newport, E. L., Hauser, M. D., Spaepen, G. & Aslin, R. N. Learning at a distance II. Statistical learning of non-adjacent dependencies in a non-human primate. Cogn. Psychol. 49, 85–117 (2004).
2. Sonnweber, R., Ravignani, A. & Fitch, W. T. Non-adjacent visual dependency learning in chimpanzees. Anim. Cognition 18, 733–745 (2015).
3. Chen, J. & Cate, Ten C. Bridging the gap: learning of acoustic nonadjacent dependencies by a songbird. J. Exp. Psychol.: Anim. Learn. Cognition 43, 295–302 (2017).
4. Watson, S. K. et al. Nonadjacent dependency processing in monkeys, apes, and humans. Sci. Adv. 6, eabb0725 (2020).
5. Fitch, W. The evolution of syntax: an exaptationist perspective. Front. Evolut. Neurosci. 3, 9 (2011).
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