Tietze G, Afontshenko V
Scand Audiol. 1978;7(1):33-8. doi: 10.3109/01050397809043129.
The present investigation concerned the possibility of obtaining higher AEP amplitudes at or near the hearing threshold by stimulation with frequency-modulated sinusoidal tones (FM stimulation) than by tone burst stimulation. With FM stimulation the frequency changes may lead to changes in the coupler sound pressure level in the headphone (additional amplitude or intensity modulation) as well as changes in sensation levels due to frequency-dependent hearing sensitivity which have to be compensated for. To ensure comparability of FM and tone burst stimulation it has also to be considered that the FM frequency increment does not substantially exceed the critical bandwidth of the human ear. With these conditions taken into account, no combination of FM stimulation parameters was found that resulted in a larger AEP amplitude than tone burst stimulation. With comparable stimulation parameters, the AEP amplitudes were identical for FM and tone burst stimulation.
本研究关注通过调频正弦波音调刺激（FM刺激）在听阈或接近听阈时获得比短纯音刺激更高听觉诱发电位（AEP）波幅的可能性。在FM刺激中，频率变化可能导致耳机中耦合器声压级的变化（额外的幅度或强度调制），以及由于频率依赖性听力敏感度引起的感觉级变化，这些都必须加以补偿。为确保FM刺激和短纯音刺激具有可比性，还必须考虑FM频率增量不会显著超过人耳的临界带宽。考虑到这些条件，未发现任何FM刺激参数组合能产生比短纯音刺激更大的AEP波幅。在可比的刺激参数下，FM刺激和短纯音刺激的AEP波幅相同。
