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ID 15066
file
creator
subject
Event-related potential
Voluntary action
Action effect
Orienting response
P3a
P3b
NDC
Psychology
abstract
Humans often get information by voluntary action. However, little is known about how stimulus processing is modulated by self-production of stimuli. In the present study, event-related brain potentials were recorded from 16 student volunteers performing an auditory three-stimulus oddball task in two conditions. In the self condition, the stimuli were triggered by participants' voluntary button presses. In the auto condition, the same stimuli were presented automatically by a computer with the same interstimulus intervals as those in the self condition. Perceptually deviant nontarget stimuli elicited a larger P3 and a larger subsequent positivity in the self condition than in the auto condition, whereas low-deviant target stimuli elicited a P3 with equally high amplitude in both conditions. The findings suggest that voluntary stimulus production enhances orienting of attention (reflected in the P3a component) and subsequent memory updating (reflected in the P3b component) for deviant stimuli, but does not affect the response to task-relevant stimuli. Voluntary action may activate the perceptual representation of its most frequent outcomes and this anticipatory activation may make deviant stimuli more salient in the context.
journal title
International Journal of Psychophysiology
volume
Volume 59
issue
Issue 1
start page
15
end page
21
date of issued
2006-01
publisher
Elsevier B. V.
issn
0167-8760
ncid
publisher doi
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
author
rights
Copyright (c) 2006 Elsevier B. V.
relation is version of URL
http://dx.doi.org/10.1016/j.ijpsycho.2005.06.008
department
Graduate School of Integrated Arts and Sciences