Honjoh Y, Okita T
Shinrigaku Kenkyu. 1981 Apr;52(1):23-9.
Event-related potentials to tone pips were recorded while subjects listened selectively to one of four kinds of stimuli. High tone pips and a message in female voice were mixed and presented to one ear, and low tones and a message in male voice to the other ear. When attention was directed to tones, a slow negative shift was observed to be superimposed on the N1 (and P2) component evoked by the attended tones; when attention was switched to messages, those N1 and P2 amplitudes to tones in attended and unattended ears were reduced. The attention-related reduction of N1 and P2 amplitudes and the development of the negativity were interpreted in relation to early and late stages of the human information processing.
当受试者选择性地聆听四种刺激中的一种时，记录与短纯音相关的事件相关电位。高音短纯音和女性声音的信息混合后呈现给一只耳朵，低音和男性声音的信息呈现给另一只耳朵。当注意力集中在音调上时，观察到一个缓慢的负向偏移叠加在被关注音调诱发的N1（和P2）成分上；当注意力转移到信息上时，被关注和未被关注耳朵中音调的N1和P2波幅均降低。N1和P2波幅与注意力相关的降低以及负向电位的产生与人类信息处理的早期和晚期阶段相关。
