Title: Response-Related Potentials during Semantic Priming: The Effect of a Speeded Button Response Task on ERPs
Authors: van Vliet, Marijn ×
Manyakov, Nikolay V.
Storms, Gerrit
Fias, Wim
Wiersema, Jan Roel
Van Hulle, Marc M. #
Issue Date: 6-Feb-2014
Publisher: Public Library of Sciene
Series Title: PLoS One vol:9 issue:2 pages:1-9
Article number: e87650
Abstract: This study examines the influence of a button response task on the event-related potential (ERP) in a semantic priming
experiment. Of particular interest is the N400 component. In many semantic priming studies, subjects are asked to respond
to a stimulus as fast and accurately as possible by pressing a button. Response time (RT) is recorded in parallel with an
electroencephalogram (EEG) for ERP analysis. In this case, the response occurs in the time window used for ERP analysis and
response-related components may overlap with stimulus-locked ones such as the N400. This has led to a recommendation
against such a design, although the issue has not been explored in depth. Since studies keep being published that disregard
this issue, a more detailed examination of influence of response-related potentials on the ERP is needed. Two experiments
were performed in which subjects pressed one of two buttons with their dominant hand in response to word-pairs with
varying association strength (AS), indicating a personal judgement of association between the two words. In the first
experiment, subjects were instructed to respond as fast and accurately as possible. In the second experiment, subjects
delayed their button response to enforce a one second interval between the onset of the target word and the button
response. Results show that in the first experiment a P3 component and motor-related potentials (MRPs) overlap with the
N400 component, which can cause a misinterpretation of the latter. In order to study the N400 component, the button
response should be delayed to avoid contamination of the ERP with response-related components.
ISSN: 1932-6203
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Laboratory for Neuro- and Psychofysiology
Research Group Neurophysiology
Laboratory for Experimental Psychology
× corresponding author
# (joint) last author

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