4.2 Article

When one pseudoword elicits larger P600 than another: a study on the role of reprocessing in anomalous sentence comprehension

Journal

LANGUAGE COGNITION AND NEUROSCIENCE
Volume 36, Issue 10, Pages 1201-1214

Publisher

ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD
DOI: 10.1080/23273798.2021.1922724

Keywords

Sentence comprehension; cognitive mechanism; reprocessing; integration; P600

Funding

  1. Major Program of the National Natural Science Foundation of China [62036001]
  2. Major Program of National Fund of Philosophy and Social Science of China [14ZDB154, 15ZDB017]
  3. Beijing Natural Science Foundation [4202028]

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This study compares different conditions of event-related potentials (ERPs) and demonstrates the role of reprocessing in language comprehension. The condition with homophonic pseudowords elicits the largest P600 effect, indicating an important role of reprocessing in sentence comprehension.
Reprocessing has been speculated to be a late higher-level cognitive process in the P600 time window in event-related potential (ERP) studies. However, uncertainties regarding the P600 as an index of reprocessing have obscured the role of reprocessing in sentence comprehension. In this study, we compared meaningless pseudowords with or without a homophonic repairing clue (homophonic pseudoword vs. ordinary pseudoword) and semantically-plus-syntactically violated real words (doubly violated) to investigate the role of reprocessing in language comprehension. All anomalous conditions elicited significant typical central-parietal P600 effects. The homophonic pseudoword condition elicited a significantly larger P600 effect than the other two anomalous conditions. No significant difference was found between the P600 effects in the ordinary pseudoword and the doubly violated real-word conditions. These results demonstrate an association between reprocessing and the observed P600 effects, supporting an active role of reprocessing in sentence comprehension. Possible implications for language processing models are also discussed.

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