Qi Beier, Liu Bo, Krenmayr Andreas, Liu Sha, Gong Shusheng, Liu Haihong, Zhang Ning, Han Demin
Beijing Tong Ren Hospital, Capital Medical University, Beijing Institute of Otolaryngology, Ministry of Education, China.
Acta Otolaryngol. 2011 Jan;131(1):52-8. doi: 10.3109/00016489.2010.506652. Epub 2010 Sep 23.
Not stimulating the apical cochlear region in tonal language speaking cochlear implantees significantly reduces discrimination of Mandarin vowels. The data presented here suggest that electrode arrays that allow complete cochlear coverage with stimulation pulses seem to be preferable over shorter arrays for use in cochlear implant (CI) indications.
To assess the contribution of electrical stimulation beyond the first cochlear turn on tonal language speech perception.
Twelve Mandarin-speaking users of the MED-EL COMBI 40+ cochlear implant with complete insertion of the standard COMBI 40+ electrode array participated in the study. Acute speech tests were performed in seven electrode configurations with stimulation either distributed over the whole length of the cochlea or restricted to the apical, middle or basal regions. The test battery comprised tone, consonant, and vowel identification in quiet as well as a sentence recognition task in quiet and noise.
While neither tone nor consonant identification depended crucially on the placement of the active electrodes, vowel identification and sentence recognition decreased significantly when the four apical electrodes were not stimulated.
对于说声调语言的人工耳蜗植入者，不刺激耳蜗顶部区域会显著降低汉语元音的辨别能力。此处呈现的数据表明，在人工耳蜗植入适应症中，能使刺激脉冲完全覆盖耳蜗的电极阵列似乎比较短的电极阵列更可取。
评估耳蜗第一圈以外的电刺激对声调语言语音感知的作用。
12名使用MED-EL COMBI 40+人工耳蜗且标准COMBI 40+电极阵列完全植入的汉语使用者参与了该研究。采用七种电极配置进行急性语音测试，刺激要么分布在耳蜗的整个长度上，要么限制在顶部、中部或基部区域。测试组包括安静环境下的声调、辅音和元音识别，以及安静和噪声环境下的句子识别任务。
虽然声调识别和辅音识别都不关键取决于有源电极的位置，但当不刺激四个顶部电极时，元音识别和句子识别显著下降。
