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ERP correlates of unexpected word forms in a picture–word study of infants and adults

We tested 14-month-olds and adults in an event-related potentials (ERPs) study in which pictures of familiar objects generated expectations about upcoming word forms. Expected word forms labelled the picture (word condition), while unexpected word forms mismatched by either a small deviation in word...

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Detalles Bibliográficos
Autores principales: Duta, M.D., Styles, S.J., Plunkett, K.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2012
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3336206/
https://www.ncbi.nlm.nih.gov/pubmed/22483072
http://dx.doi.org/10.1016/j.dcn.2012.01.003
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author Duta, M.D.
Styles, S.J.
Plunkett, K.
author_facet Duta, M.D.
Styles, S.J.
Plunkett, K.
author_sort Duta, M.D.
collection PubMed
description We tested 14-month-olds and adults in an event-related potentials (ERPs) study in which pictures of familiar objects generated expectations about upcoming word forms. Expected word forms labelled the picture (word condition), while unexpected word forms mismatched by either a small deviation in word medial vowel height (mispronunciation condition) or a large deviation from the onset of the first speech segment (pseudoword condition). Both infants and adults showed sensitivity to both types of unexpected word form. Adults showed a chain of discrete effects: positivity over the N(1) wave, negativity over the P(2) wave (PMN effect) and negativity over the N(2) wave (N400 effect). Infants showed a similar pattern, including a robust effect similar to the adult P(2) effect. These observations were underpinned by a novel visualisation method which shows the dynamics of the ERP within bands of the scalp over time. The results demonstrate shared processing mechanisms across development, as even subtle deviations from expected word forms were indexed in both age groups by a reduction in the amplitude of characteristic waves in the early auditory evoked potential.
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spelling pubmed-33362062012-04-26 ERP correlates of unexpected word forms in a picture–word study of infants and adults Duta, M.D. Styles, S.J. Plunkett, K. Dev Cogn Neurosci Original research We tested 14-month-olds and adults in an event-related potentials (ERPs) study in which pictures of familiar objects generated expectations about upcoming word forms. Expected word forms labelled the picture (word condition), while unexpected word forms mismatched by either a small deviation in word medial vowel height (mispronunciation condition) or a large deviation from the onset of the first speech segment (pseudoword condition). Both infants and adults showed sensitivity to both types of unexpected word form. Adults showed a chain of discrete effects: positivity over the N(1) wave, negativity over the P(2) wave (PMN effect) and negativity over the N(2) wave (N400 effect). Infants showed a similar pattern, including a robust effect similar to the adult P(2) effect. These observations were underpinned by a novel visualisation method which shows the dynamics of the ERP within bands of the scalp over time. The results demonstrate shared processing mechanisms across development, as even subtle deviations from expected word forms were indexed in both age groups by a reduction in the amplitude of characteristic waves in the early auditory evoked potential. Elsevier 2012-01-16 /pmc/articles/PMC3336206/ /pubmed/22483072 http://dx.doi.org/10.1016/j.dcn.2012.01.003 Text en © 2012 Elsevier Ltd. http://creativecommons.org/licenses/by/3.0/ This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/3.0/).
spellingShingle Original research
Duta, M.D.
Styles, S.J.
Plunkett, K.
ERP correlates of unexpected word forms in a picture–word study of infants and adults
title ERP correlates of unexpected word forms in a picture–word study of infants and adults
title_full ERP correlates of unexpected word forms in a picture–word study of infants and adults
title_fullStr ERP correlates of unexpected word forms in a picture–word study of infants and adults
title_full_unstemmed ERP correlates of unexpected word forms in a picture–word study of infants and adults
title_short ERP correlates of unexpected word forms in a picture–word study of infants and adults
title_sort erp correlates of unexpected word forms in a picture–word study of infants and adults
topic Original research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3336206/
https://www.ncbi.nlm.nih.gov/pubmed/22483072
http://dx.doi.org/10.1016/j.dcn.2012.01.003
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