采用腦電技術,以形旁和聲旁均為獨體字的形聲字為實驗材料,通過操縱形旁頻率和聲旁頻率,在漢字命名任務中探討了形旁和聲旁在形聲字識別中的作用。結果表明形旁頻率在左腦誘發了P200效應,而聲旁頻率效應也表現在左腦,但是誘發的是N400變化而非P200的變化。隨后的時程分析發現在左后腦區,形旁頻率在200～500 ms時間窗內均顯著或邊緣顯著,聲旁的頻率效應稍晚,從350 ms開始,持續到500 ms。結果說明在命名任務中,和聲旁相比,形旁發揮作用較早,且持續的時間較長。

In this study,event-related potentials technology was adopted.The Chinese phonogram in which the semantic radicals and the phonetic radicals were both integral characters were used as experimental materials.By manipulating the frequency of the semantic radicals and the phonetic radicals,the role of the semantic radicals and the phonetic radicals in the recognition of Chinese phonogram was explored in the naming task.The results showed that the frequency of the semantic radicals induced the P200 effect in the left hemisphere,while the frequency of the phonetic radicals induced the N400 effect.Subsequent time history analysis found that in the left posterior region,the effects of the frequency of the semantic radicals were significant or marginally significant within a time window of 200 to 500 ms,and the effects of the frequency of the phonetic radicals were slightly later,starting from 350 ms and lasting to 500 ms.The results showed that in the naming task,compared with the phonetic radicals,the semantic radicals took effect earlier and lasted longer.The semantic radicals had an advantage in the recognition of Chinese phonogram.