Selective attention and N400 attenuation with spoken word repetition

Author(s): Jibu, T.

Journal/Book: Psychophysiology. 1998; 35: 40 West 20TH Street, New York, NY 10011-4211. Cambridge Univ Press. 260-271.

Abstract: In two experiments, event-related brain potentials were recorded to word pairs simultaneously presented to both ears, with instructions to attend to one ear and detect occasional nonwords In that ear. This attentional manipulation yielded four patterns of word repetition on successive trials: first and second presentations attended (AA), both unattended (UU), and across ears (AU and UA). A prominent attenuation of N400 due to immediate repetition of words was observed on AA trials. However, when first presentations were ignored an UU and UA trials, no repetition effect was obtained. These findings indicate that the repetition effect on N400 depends on attentional processing of first presentations.

Note: Article Okita T, Hyogo Med Univ, Dept Behav Sci, 1-1 Mukogawa CHO, Nishinomiya, Hyogo 663, JAPAN

Keyword(s): selective attention; auditory N400; event-related brain potential; repetition effects; EVENT-RELATED POTENTIALS; ELECTROPHYSIOLOGICAL EVIDENCE; MODULATION; MEMORY

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