Quick reorganization of memory traces for morphologically complex words in young children

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Leminen , M , Leminen , A , Smolander , S , Arkkila , E , Shtyrov , Y , Laasonen , M & Kujala , T 2020 , ' Quick reorganization of memory traces for morphologically complex words in young children ' , Neuropsychologia , vol. 138 , 107309 . https://doi.org/10.1016/j.neuropsychologia.2019.107309

Title: Quick reorganization of memory traces for morphologically complex words in young children
Author: Leminen, Miika; Leminen, Alina; Smolander, Sini; Arkkila, Eva; Shtyrov, Yury; Laasonen, Marja; Kujala, Teija
Contributor: University of Helsinki, Department of Psychology and Logopedics
University of Helsinki, Department of Digital Humanities
University of Helsinki, HUS Head and Neck Center
University of Helsinki, HUS Head and Neck Center
University of Helsinki, Aarhus University
University of Helsinki, HUS Head and Neck Center
University of Helsinki, Department of Psychology and Logopedics
Date: 2020-02-17
Language: eng
Number of pages: 9
Belongs to series: Neuropsychologia
ISSN: 0028-3932
URI: http://hdl.handle.net/10138/330260
Abstract: Formation of neural mechanisms for morphosyntactic processing in young children is still poorly understood. Here, we addressed neural processing and rapid online acquisition of familiar and unfamiliar combinations of morphemes. Three different types of morphologically complex words - derived, inflected, and novel (pseudostem + real suffix) - were presented in a passive listening setting to 16 typically developing 3-4-year old children (as part of a longitudinal Helsinki SLI follow-up study). The mismatch negativity (MMN) component of event-related potentials (ERP), an established index of long-term linguistic memory traces in the brain, was analysed separately for the initial and final periods of the exposure to these items. We found MMN response enhancement for the inflected words towards the end of the recording session, whereas no response change was observed for the derived or novel complex forms. This enhancement indicates rapid build-up of a new memory trace for the combination of real morphemes, suggesting a capacity for online formation of whole-form lexicalized representations as one of the morphological mechanisms in the developing brain. Furthermore, this enhancement increased with age, suggesting the development of automatic morphological processing circuits in the age range of 3-4 years.
Subject: 515 Psychology
Lexical memory traces
Morphologically complex words
Lexical MMN
Neurocognitive development
NEUROPHYSIOLOGICAL EVIDENCE
DERIVATIONAL MORPHOLOGY
AFFIXAL HOMONYMY
NEURAL DYNAMICS
LANGUAGE
ACQUISITION
BRAIN
FINNISH
REPRESENTATION
CONSOLIDATION
6162 Cognitive science
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