課題関連性が意味的関連性によるN400減衰に及ぼす影響

The effects of task relevancy on N400 attenuation by semantic relation

中尾 美月

広島大学大学院教育学研究科紀要. 第三部, 教育人間科学関連領域

Bulletin of the Graduate School of Education, Hiroshima University. Part. Ⅲ, Education and Human Science

Event-related brain potentials (ERPs) associated with semantic relation were recorded from twelve subjects while detecting nonwords preceded by a specific word in a series of successively presented words and nonwords. In this task, subjects were required the lexical decision for probes preceded by the specific prime (TASK RELEVANT condition), but not for the probes preceded by other primes (TASK IRELEVANT condition). The amplitude of a negative ERP component (N400) was significantly attenuated when the probes were preceded by semantically related primes. This attenuation was greater in TASK RELEVANT condition than TASK IRELEVANT condition, regardless of the modulation of such components overlapping on N400 as CNV resolution and late positive component in TASK RELEVANT condition. The advantages and disadvantages for imposing any task on probes were discussed.

事象関連電位 (ERP)

N400

課題関連性

意味的関連性

event-related brain potentials (ERPs)

task krelevancy

semantic relation

心理学 [ 140 ]

日本語

広島大学大学院教育学研究科

国立情報学研究所

[ISSN] 1346-5562

[NCID] AA11625039