Musical pitch perception with electrical stimulation of the cochlea
Musical pitch perception with electrical stimulation of the cochlea
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DOI：
10.1121/1.418177
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发表时间：
1997-03-01
影响因子：
2.4
通讯作者：
McKay, CM
中科院分区：
文献类型：
--
作者：
McDermott, HJ;McKay, CM
进行研究以调查Nucleus多电极人工耳蜗植入物的用户在音乐间隔的背景下判断音高的能力。受试者在接受植入手术之前已经具备了乐器调音师的资格，并且能够在没有训练或熟悉旋律的指导下判断电感觉之间的间隔。所用的程序是区间估计和调整法产生的区间。通过改变脉冲重复率、有源电极位置或这些参数的两种组合来控制电刺激的音高。进一步的研究采用正弦幅度调制脉冲序列与不同的调制频率。结果表明，频率或调制频率可以在有限的范围内（大约两个八度）传达音高信息。这些数据与正常听力的音乐间隔和频率之间的关系直接可比。与电极位置相关的音高根据耳蜗的音调组织而变化，并且似乎也能够支持音乐间隔。当地点和速率同时变化时，地点相关音高通常占主导地位。在所有的情况下，判断的间隔往往偏离他们的声学同行的间隔变得更大。(C)1997年美国声学学会。
Studies were undertaken to investigate the ability of a user of the Nucleus multi-electrode cochlear implant to judge pitch in the context of musical intervals. The subject had qualified as a musical instrument tuner before he received his implant, and was able to judge the intervals between electrical sensations with neither training nor the guidance of familiar melodies. The procedures used were interval estimation, and interval production by the method of adjustment. The pitch of the electrical stimulation was controlled by varying the pulse repetition rate, the active electrode position, or two combinations of these parameters. Further studies employed sinusoidally amplitude modulated pulse trains with varying modulation frequency. The results showed that rate or modulation frequency could convey musical pitch information over a limited range (approximately two octaves). The data were directly comparable with the relationship between musical intervals and frequency for normal hearing. The pitch related to electrode place varied in accordance with the tonotopic organization of the cochlea, and also appeared to be able to support musical intervals. When both place and rate varied together, the place-related pitch was generally dominant. In all cases, the judgement of intervals tended to diverge from their acoustic counterparts as the intervals became larger. (C) 1997 Acoustical Society of America.