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当用100赫以下的低频短纯音(tone burst)给人耳时,可从头皮记录到和刺激频率相匹配的微小振荡电位,由于它和所用的短纯音的波形相位一致,故称为“频率仿效反应”(frequency-following response,FFR,或译频率跟随反应)。虽然这一现象在听力测定方面有一定的临床意义,但对它的产生过程或部位几无所知。为此,作者们检查了10例24～45岁的受试者,左耳给500赫短纯音,右耳给540赫,分别记录单耳和双耳条件下的FFR。结果表明,刺激双耳引出的FFR,明显小于刺激单耳引出并总合在一起的
When a low frequency short tone below 100 Hz is given to the human ear, a slight oscillation potential that matches the frequency of the stimulus can be recorded from the scalp. Since it is in phase with the waveform of the short pure tone used, it is called "frequency Frequency-following response (FFR) or frequency-following response. Although this phenomenon has some clinical significance in the audiometry, but its production process or parts do not know. To do this, the authors examined 10 subjects aged 24-45 years with 500 Hz short pure tones on the left ear and 540 Hz on the right ear, recording FFR in single-ear and binaural, respectively. The results showed that the FFR stimulated by both ears was significantly smaller than that stimulated by monaural ears and summed together