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Additive Effects of Repetition and Predictability during Comprehension: Evidence from Event-Related Potentials

Chow, W-Y; Lago, S; Barrios, S; Parker, D; Morini, G; Lau, E; (2014) Additive Effects of Repetition and Predictability during Comprehension: Evidence from Event-Related Potentials. PLoS ONE , 9 (6) , Article e99199. 10.1371/journal.pone.0099199. Green open access

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Abstract

Previous research has shown that neural responses to words during sentence comprehension are sensitive to both lexical repetition and a word’s predictability in context. While previous research has often contrasted the effects of these variables (e.g. by looking at cases in which word repetition violates sentence-level constraints), little is known about how they work in tandem. In the current study we examine how recent exposure to a word and its predictability in context combine to impact lexical semantic processing. We devise a novel paradigm that combines reading comprehension with a recognition memory task, allowing for an orthogonal manipulation of a word’s predictability and its repetition status. Using event-related brain potentials (ERPs), we show that word repetition and predictability have qualitatively similar and additive effects on the N400 amplitude. We propose that prior exposure to a word and predictability impact lexical semantic processing in an additive and independent fashion.

Type: Article
Title: Additive Effects of Repetition and Predictability during Comprehension: Evidence from Event-Related Potentials
Open access status: An open access version is available from UCL Discovery
DOI: 10.1371/journal.pone.0099199
Publisher version: http://dx.doi.org/10.1371/journal.pone.0099199
Language: English
Additional information: © 2014 Chow et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
URI: https://discovery.ucl.ac.uk/id/eprint/1449849
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