title: Development of lexical-semantic language system: N400 priming effect for spoken words in 18- and 24-month old children.
abstract: Our aim was to investigate whether developing language system, as measured by a priming task for spoken words, is organized by semantic categories. Event-related potentials (ERPs) were recorded during a priming task for spoken words in 18- and 24-month-old monolingual French learning children. Spoken word pairs were either semantically related (e.g., train-bike) or unrelated (e.g., chicken-bike). The results showed that the N400-like priming effect occurred in 24-month-olds over the right parietal-occipital recording sites. In 18-month-olds the effect was observed similarly to 24-month-olds only in those children with higher word production ability. The results suggest that words are categorically organized in the mental lexicon of children at the age of 2 years and even earlier in children with a high vocabulary.
authors: Laboratoire Psychologie de la Perception, Université Paris Descartes, Paris, France. pia.rama@parisdescartes.fr
authors: Pia
authors: P
authors: Rämä
authors: Louah
authors: L
authors: Sirri
authors: Josette
authors: J
authors: Serres
mesh_terms: D001921:Brain / Q000502:physiology*; D004569:Electroencephalography; D005071:Evoked Potentials / Q000502:physiology; D005260:Female; D006801:Humans; D007223:Infant; D007802:Language; D007804:Language Development; D008297:Male; D012660:Semantics; D013060:Speech