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ID 23281
file
creator
Shibuya, Yoshie
Hori, Tadao
subject
curiosity
interest
exploratory behavior
event-related potentials
novelty
conflict
unfamiliarity
picture
NDC
Psychology
abstract
Event-related brain potentials (ERPs) in response to novel pictures and subsequent visual exploration were examined. Eighteen undergraduates viewed 120 novel drawings as long as they wished. ERPs were calculated separately for drawings that were viewed longer or shorter than the median viewing time of each participant. The drawings viewed longer elicited a larger anterior negativity (N2) peaking at 245 ms than the shorter viewed drawings. This effect disappeared and the overall amplitude of the N2 decreased when the same set of drawings was presented again in a subsequent interest-rating session. Drawings rated as more interesting elicited a larger N2 than did drawings rated as less interesting. This study demonstrates a type of anterior N2 that is sensitive to stimulus unfamiliarity or difficulty in encoding, which reflects a conflict between stimulus input and existing knowledge and prompts further recognition processes and visual exploration.
journal title
Psychophysiology
volume
Volume 44
issue
Issue 5
start page
687
end page
696
date of issued
2007-09
publisher
Blackwell
issn
0048-5772
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) 2007 Society for Psychophysiological Research
relation
The definite version is avairable at www.blackwell-synergy.com
relation is version of URL
http://dx.doi.org/10.1111/j.1469-8986.2007.00539.x
department
Graduate School of Integrated Arts and Sciences