Qi Beier, Liu Bo, Liu Sha, Liu Haihong, Dong Ruijuan, Zhang Ning, Gong Shusheng
Beijing Tongren Hospital, Capital Medical University, Institute of Otolaryngology, Key Laboratory of Otolaryngology-Head and Neck Surgery, Ministry of Education, Beijing, 100005, China.
Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi. 2011 May;25(10):441-4.
To study the effect of cochlear electrode coverage and different insertion region on speech recognition, especially tone perception of cochlear implant users whose native language is Mandarin Chinese.
Setting seven test conditions by fitting software. All conditions were created by switching on/off respective channels in order to simulate different insertion position. Then Mandarin CI users received 4 Speech tests, including Vowel Identification test, Consonant Identification test, Tone Identification test-male speaker, Mandarin HINT test (SRS) in quiet and noise.
To all test conditions: the average score of vowel identification was significantly different, from 56% to 91% (Rank sum test, P < 0.05). The average score of consonant identification was significantly different, from 72% to 85% (ANOVNA, P < 0.05). The average score of Tone identification was not significantly different (ANOVNA, P > 0.05). However the more channels activated, the higher scores obtained, from 68% to 81%.
This study shows that there is a correlation between insertion depth and speech recognition. Because all parts of the basement membrane can help CI users to improve their speech recognition ability, it is very important to enhance verbal communication ability and social interaction ability of CI users by increasing insertion depth and actively stimulating the top region of cochlear.
研究人工耳蜗电极覆盖范围和不同植入区域对以汉语为母语的人工耳蜗使用者言语识别，尤其是声调感知的影响。
通过调试软件设置七种测试条件。所有条件均通过开启/关闭相应通道来创建，以模拟不同的植入位置。然后，汉语人工耳蜗使用者接受4项言语测试，包括元音识别测试、辅音识别测试、男性说话者声调识别测试、汉语言语噪声测试（言语识别得分），测试环境为安静和噪声环境。
在所有测试条件下：元音识别的平均得分有显著差异，从56%到91%（秩和检验，P<0.05）。辅音识别的平均得分有显著差异，从72%到85%（方差分析，P<0.05）。声调识别的平均得分无显著差异（方差分析，P>0.05）。然而，激活的通道越多，得分越高，从68%到81%。
本研究表明植入深度与言语识别之间存在相关性。由于基底膜的所有部分都有助于人工耳蜗使用者提高言语识别能力，因此通过增加植入深度并积极刺激耳蜗顶部区域来提高人工耳蜗使用者的言语交流能力和社会互动能力非常重要。
