耳蜗刺激部位是人工耳蜗声音质量的一个决定因素。
Cochlear Place of Stimulation Is One Determinant of Cochlear Implant Sound Quality.
作者信息
Dorman Michael F, Cook Natale Sarah, Baxter Leslie, Zeitler Daniel M, Carlson Mathew L, Noble Jack H
机构信息
College of Health Solutions, Speech and Hearing Science, Arizona State University, Tempe, Arizona, USA,
College of Health Solutions, Speech and Hearing Science, Arizona State University, Tempe, Arizona, USA.
出版信息
Audiol Neurootol. 2019;24(5):264-269. doi: 10.1159/000503217. Epub 2019 Oct 29.
OBJECTIVE
Our aim was to determine the effect of acute changes in cochlear place of stimulation on cochlear implant (CI) sound quality.
DESIGN
In Experiment 1, 5 single-sided deaf (SSD) listeners fitted with a long (28-mm) electrode array were tested. Basal shifts in place of stimulation were implemented by turning off the most apical electrodes and reassigning the filters to more basal electrodes. In Experiment 2, 2 SSD patients fitted with a shorter (16.5-mm) electrode array were tested. Both basal and apical shifts in place of stimulation were implemented. The apical shifts were accomplished by current steering and creating a virtual place of stimulation more apical that that of the most apical electrode.
RESULTS
Listeners matched basal shifts by shifting, in the normal-hearing ear, the overall spectrum up in frequency and/or increasing voice pitch (F0). Listeners matched apical shifts by shifting down the overall frequency spectrum in the normal-hearing ear.
CONCLUSION
One factor determining CI voice quality is the location of stimulation along the cochlear partition.
目的
我们的目的是确定耳蜗刺激部位的急性变化对人工耳蜗（CI）音质的影响。
设计
在实验1中，对5名单侧耳聋（SSD）受试者进行测试，他们佩戴的是长（28毫米）电极阵列。通过关闭最顶端的电极并将滤波器重新分配到更靠近基部的电极来实现刺激部位的基部移位。在实验2中，对2名佩戴较短（16.5毫米）电极阵列的SSD患者进行测试。实现了刺激部位的基部和顶端移位。顶端移位是通过电流控制并创建一个比最顶端电极更靠近顶端的虚拟刺激部位来完成的。
结果
受试者通过在正常听力耳中提高整体频谱频率和/或提高语音基频（F0）来匹配基部移位。受试者通过在正常听力耳中降低整体频谱频率来匹配顶端移位。
结论
决定CI语音质量的一个因素是沿耳蜗隔板的刺激位置。
Zotero 插件