Cochlear Implants: Electric and Acoustic Stimulation

人工耳蜗：电刺激和声刺激

• 批准号: 6791610
• 负责人: Rene H Gifford
• 金额: $ 4.11万
• 依托单位: ARIZONA STATE UNIVERSITY-TEMPE CAMPUS
• 依托单位国家: 美国
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-01-01 至 2006-12-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6791610
• 关键词: audiometry; auditory discrimination; auditory feedback; auditory stimulus; auditory threshold; clinical research; clinical trials; cochlear implants; compression; electrostimulus; human subject; medical implant science; noise; patient oriented research; performance; postdoctoral investigator; postoperative state; preoperative state; sound frequency; sound perception; speech recognition

DESCRIPTION (provided by applicant): Cochlear implant recipients have traditionally performed poorly on measures of speech intelligibility in the presence of noise. Recently, listeners incorporating both electric and low-frequency acoustic stimulation of the same cochlea have demonstrated significant improvements in speech perception in noise that exceed the sum of the intelligibility scores of acoustic and electric stimulation, alone. Thus, the main purpose of this study is to assess whether low-frequency acoustic processing, including frequency resolution, temporal resolution, and cochlear compression, can help account for the synergistic effect of combined electric and acoustic stimulation. Additionally, a subset of these listeners will be examined both pre- and post-implant to investigate the effects of the partially implanted electrode array on tow-frequency acoustic processing including low-frequency quiet thresholds in relatively small, discrete frequency steps, cochlear compression, temporal resolution, frequency resolution, and estimates of speech perception both in quiet and in noise. Both pre- and post-implant measures will be required to accurately assess the effects of the surgery on the apical end of the cochlea.

描述（由申请人提供）：传统上，人工耳蜗植入者在噪声存在下的言语清晰度测量中表现不佳。最近，对同一耳蜗同时进行电刺激和低频声刺激的听众已经证明，在噪声中的语音感知有显着改善，超过了单独的声刺激和电刺激的清晰度分数之和。因此，本研究的主要目的是评估低频声学处理（包括频率分辨率、时间分辨率和耳蜗压缩）是否有助于解释电刺激和声刺激相结合的协同效应。此外，这些听众的子集将在植入前和植入后进行检查，以研究部分植入的电极阵列对双频声学处理的影响，包括相对较小、离散频率步长的低频安静阈值、耳蜗压缩、时间分辨率、频率分辨率以及安静和噪声下语音感知的估计。需要在植入前和植入后进行测量，以准确评估手术对耳蜗顶端的影响。