Document Detail

Neurocognitive processing of auditorily and visually presented inflected words and pseudowords: evidence from a morphologically rich language.
MedLine Citation:
PMID:  19362541     Owner:  NLM     Status:  MEDLINE    
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.
Alina Leinonen; Petra Gr?nholm-Nyman; Miika J?rvenp??; Carina S?derholm; Otto Lappi; Matti Laine; Christina M Krause
Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't     Date:  2009-04-09
Journal Detail:
Title:  Brain research     Volume:  1275     ISSN:  1872-6240     ISO Abbreviation:  Brain Res.     Publication Date:  2009 Jun 
Date Detail:
Created Date:  2009-06-05     Completed Date:  2010-02-23     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0045503     Medline TA:  Brain Res     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  54-66     Citation Subset:  IM    
Cognitive Science Unit, Department of Psychology, POB 9, 00014 University of Helsinki, Helsinki, Finland.
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MeSH Terms
Acoustic Stimulation / methods
Auditory Perception / physiology*
Cognition / physiology*
Photic Stimulation / methods
Psychomotor Performance / physiology
Reaction Time / physiology
Visual Perception / physiology*
Young Adult

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