Please use this identifier to cite or link to this item:
Title: Event-related potential N270 delayed and enhanced by the conjunction of relevant and irrelevant perceptual mismatch
Authors: Bennett, Matthew A.
Duke, Philip A.
Fuggetta, Giorgio
First Published: 26-Feb-2014
Publisher: Wiley on behalf of Society for Psychophysiological Research
Citation: Psychophysiology, 2014, 51 (5), pp. 456-463
Abstract: Event-related potential studies using delayed match-to-sample tasks have demonstrated the presence of two components, N270 and N400, possibly reflecting the sequential processing of multiple sources of endogenous mismatch. To date, studies have only investigated mismatch between a single cue and target. In this study, we used distractor stimuli to investigate the effect of a secondary source of mismatch distinct from the task-relevant stimulus. Subjects performed two paradigms in which the cue and target could match or mismatch. In one paradigm, task-irrelevant distractors were added--producing a source of task-irrelevant perceptual mismatch. A mismatch-triggered negativity was elicited in both paradigms, but was delayed and enhanced in magnitude in the distractors present paradigm. It is suggested that the distractors may differentially affect mismatch responses through the generation of a task-irrelevant mismatch response.
DOI Link: 10.1111/psyp.12192
ISSN: 0048-5772
eISSN: 1540-5958
Version: Post-print
Status: Peer-reviewed
Type: Journal Article
Rights: Copyright © the authors, 2014. This is an open-access article distributed under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives License ( ), which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.
Appears in Collections:Published Articles, School of Psychology

Files in This Item:
File Description SizeFormat 
Bennett, Duke & Fuggetta, 2014.pdfPost-review (final submitted)625.52 kBAdobe PDFView/Open

Items in LRA are protected by copyright, with all rights reserved, unless otherwise indicated.