短声特性对豚鼠圆窗记录的N_1N_2反应的影响

研究了不同刺激声强情况下短声特性(极性、波形及相应频谱)改变对豚鼠圆窗记录的N_1N_2反应的影响。发现:①在低声强时,若维持刺激声强不变而使短声波形改变对N_1无影响,但是对N_2有轻微的影响。而高声强时,若维持刺激声强不变而使短声波形改变将引起N_N_2反应较为显著的变化。②不仅是短声的疏相,而且其密相对N_1N_2的形成有贡献。③N_1N_2反应不仅与短声刺激强度有关,而且还与短声的其它参数(如波宽等)有关。并就各项结果进行了讨论。

EFFECTS OF THE CHARACTERISTIC OF A CLICK ON N_1N_2 RESPONSE RECORDED FROM THE ROUND WINDOW IN GUINEAR PIG

This paper concerns the effects of changes in the waveform, spectrum and polarity of a click on the N1N2 response recorded from the round window of guinea pig. The results show that at low stimulus intensity, a change in the waveform of a click did not affect the N1 response but affected the N2 response slightly as the stimulus intensity kept constant; and at high stimulus intensity, a change in the waveform of a click would lead to a rather clear change in the N1N2 response although the stimulus intensity remained unchanged. Moreover not only the rarefaction phase, but also the condensation one of a click had effects on N1N2 response, and the waveform of N1N2 was not only related to the amplitude of a click, but also to other parameters of the click (ex.the width etc.)