Neurocognitive processing of auditorily and visually presented inflected words and pseudowords: evidence from a morphologically rich language

Alina Leinonen, Petra Grönholm-Nyman, Miika Järvenpää, Carina Söderholm, Otto Lappi, Matti Laine, Christina M Krause

Research output: Contribution to journalArticleScientificpeer-review

Abstract

The aim of the study was to investigate how the input modality affects the processing of a morphologically complex word. The processing of Finnish inflected vs. monomorphemic words and pseudowords was examined during a lexical decision task, using behavioral responses and event-related potentials. The stimuli were presented in two modalities, visually and auditorily, to two groups of participants. Half of the words and pseudowords carried a case-inflection. At the behavioral level, the inflected words elicited a processing cost with longer decision latencies and higher error rates. At the neural level, pseudowords elicited an N400 effect, which was more pronounced in the visual modality. Inflected words elicited an N400 effect in both modalities, which, however, differed in topography and latency. The N400 effect for inflected words most probably reflects access and possible integration of the stem and suffix. The results suggest that the inflectional processing cost stems from the later, lexical-semantic stage of processing in both modalities. The ERP responses to inflected pseudowords did not differ from the ERP responses to monomorphemic pseudowords in either modality, suggesting that combinatorial case-inflection processing requires a real word stem in order to proceed. (C) 2009 Elsevier B.V. All rights reserved.
Original languageEnglish
JournalBrain Research
Volume1275
Pages (from-to)54-66
Number of pages13
ISSN0006-8993
DOIs
Publication statusPublished - 2009
MoE publication typeA1 Journal article-refereed

Fields of Science

  • 515 Psychology

Cite this