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ID 29421
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別タイトル
Effects of the variability of stimulus onset asynchrony on a lexical decision
著者
中尾 美月
山本 文枝
前堂 志乃
キーワード
Lexical decision
Simple reaction
Stimulus onset asynchrony
ERP
語彙判断
単純反応
刺激時問間隔
事象関連電位
NDC
心理学
抄録(英)
We investigated the effect of the variability of time interval between a prime and a target on reaction times and event-related brain potentials (ERPs) in a lexical decision task. In Experiment I, thirty six graduates and undergraduates read silently a prime, and classified a target into word or non-word. The stimulus onset asynchrony (SOA) between the prime and the target was 500, 1000, or 2000 ms. For a half of participants, SOA was fixed within a experimental block, while three SOA conditions were randomly mixed within a block for another half of participants. The results show that the reaction times were shorter when the target was semantically related to the prime than when the former was unrelated to the latter. The degree of this semantic priming effect was not influenced by the variability of SOA. In Experiment II, we recorded scalp ERPs from 20 graduates and undergraduates who participated in the same task as Experiment I. The results of reaction times showed a replication of Experiment I. Two negative deflections of ERPs (N375 and N450) sensitive to semantic relation between prime and target were identified. Neither the amplitude nor the latency of peaks of these deflection changed according to the variability of SOA. These results suggested that a temporal aspect of controlled attention would not affect the enhancement of selectivity based on semantic information.
掲載誌名
広島大学教育学部紀要. 第三部, 教育人間科学関連領域
49号
開始ページ
199
終了ページ
206
出版年月日
2001-02-28
出版者
広島大学教育学部
ISSN
0919-8652
NCID
SelfDOI
言語
日本語
NII資源タイプ
紀要論文
広大資料タイプ
学内刊行物(紀要等)
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
publisher
部局名
教育学研究科
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