Parthasarathy T K, Moushegian G
Department of Speech Pathology and Audiology, Southern Illinois University, Edwardsville 62026.
J Am Acad Audiol. 1993 Jul;4(4):229-37.
The binaural interaction component (BIC) of the auditory brainstem response (ABR) and BIC of the frequency-following response (FFR) to tonal stimuli were studied in normal-hearing adults. The ABR and BIC latencies from all subjects were consistently shorter to the click-like sound than to the 2.0 kHz tone burst. Increasing stimulus presentation rate produced longer latencies and diminished amplitudes of ABR and BIC waveforms. The consequences of rate changes were independent of sound level. The FFR and BIC latencies to low-frequency tone bursts (0.5 and 1.0 kHz) were minimally affected by rate, but their amplitudes were modified. The results are consistent with and reflective of the functional characteristics of lower brainstem auditory neurons. The results provide evidence that the BIC to tones is differentially sensitive to the rate, frequency, and intensity of sounds other than clicks.
在听力正常的成年人中，研究了听性脑干反应（ABR）的双耳相互作用成分（BIC）以及对音调刺激的频率跟随反应（FFR）的BIC。所有受试者的ABR和BIC潜伏期对类点击声的反应始终比对2.0 kHz短纯音的反应更短。增加刺激呈现速率会使ABR和BIC波形的潜伏期延长，幅度减小。速率变化的影响与声级无关。对低频短纯音（0.5和1.0 kHz）的FFR和BIC潜伏期受速率的影响最小，但其幅度会发生改变。这些结果与低位脑干听觉神经元的功能特征一致并反映了其功能特征。结果提供了证据表明，对音调的BIC对除点击声以外的声音的速率、频率和强度具有不同的敏感性。
