Predicting form and meaning: Evidence from brain potentials

Aine Ito*, Martin Corley, Martin J. Pickering, Andrea E. Martin, Mante S. Nieuwland

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

We used ERPs to investigate the pre-activation of form and meaning in language comprehension. Participants read high-cloze sentence contexts (e.g., “The student is going to the library to borrow a…”), followed by a word that was predictable (book), form-related (hook) or semantically related (page) to the predictable word, or unrelated (sofa). At a 500 ms SOA (Experiment 1), semantically related words, but not form-related words, elicited a reduced N400 compared to unrelated words. At a 700 ms SOA (Experiment 2), semantically related words and form-related words elicited reduced N400 effects, but the effect for form-related words occurred in very high-cloze sentences only. At both SOAs, form-related words elicited an enhanced, post-N400 posterior positivity (Late Positive Component effect). The N400 effects suggest that readers can pre-activate meaning and form information for highly predictable words, but form pre-activation is more limited than meaning pre-activation. The post-N400 LPC effect suggests that participants detected the form similarity between expected and encountered input. Pre-activation of word forms crucially depends upon the time that readers have to make predictions, in line with production-based accounts of linguistic prediction.
Original languageEnglish
Pages (from-to)157-171
Number of pages16
JournalJournal of Memory and Language
Volume86
Early online date6 Nov 2015
DOIs
Publication statusPublished - 31 Jan 2016

Keywords

  • Lexical prediction
  • Word form
  • Semantic processing
  • ERPs
  • SOA

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