INTONATION OF MUSICAL INTERVALS BY MUSICAL INTERVALS BY DEAF SUBJECTS STIMULATED WITH SINGLE BIPOLAR COCHLEAR IMPLANT ELECTRODES
INTONATION OF MUSICAL INTERVALS BY MUSICAL INTERVALS BY DEAF SUBJECTS STIMULATED WITH SINGLE BIPOLAR COCHLEAR IMPLANT ELECTRODES
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DOI：
10.1016/0378-5955(95)00138-9
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发表时间：
1995-09-01
期刊：
影响因子：
2.8
通讯作者：
SCHWARZ, DWF
中科院分区：
文献类型：
--
作者：
PIJL, S;SCHWARZ, DWF
一些植入人工耳蜗的受试者已经被证明可以将电刺激脉冲率与音调的音高联系起来。为了阐明这些音高感觉在音乐背景中的作用，本研究检查了植入受试者在重建音乐音程时调整脉搏率时所实现的语调准确性。使用一种调节方法，受试者在一个电极上改变一个可变的脉搏率，相对于一个固定的参考率，在从熟悉的旋律中提取的音乐间隔的调谐中。在低脉冲率，受试者一般调整的间隔，以相同的频率比，定义音调音乐的间隔在正常听力的听众，与误差幅度可比的音乐未经训练的受试者。此外，两名受试者能够将这些旋律间隔从标准参考脉搏率转置到更高和更低的参考率（参考和目标脉搏率，间隔的几何平均值范围为81至466脉冲/秒）。一般来说，间隔是根据定义类似声学音乐间隔的相同频率比率在比率尺度上调整的。这些结果支持了这样的假设，即在低脉搏率下，听觉神经中的时间代码能够单独定义音高。
Some subjects with cochlear implants have been shown to associate electrical stimulus pulse rates with the pitches of musical tones. In order to clarify the role of these pitch sensations in a musical context, the present investigation examined the intonation accuracy achieved by implant subjects when adjusting pulse rates in the reconstruction of musical intervals. Using a method of adjustment, the subjects altered a variable pulse rate, relative to a fixed reference rate, on one electrode, in the tuning of musical intervals abstracted from familiar melodies. At low pulse rates, subjects generally tuned the intervals to the same frequency ratios which define tonal musical intervals in normal-hearing listeners, with error margins comparable to musically untrained subjects. Two subjects were, in addition, able to transpose these melodic intervals from a standard reference pulse rate to higher and lower reference rates (reference and target pulse rates with geometric means of the intervals ranging from 81 to 466 pulses/s). Generally, the intervals were adjusted on a ratio scale, according to the same frequency ratios which define analogous acoustical musical intervals. These results support the hypothesis that, at low pulse rates, a temporal code in the auditory nerve alone is capable of defining musical pitch.