Cochlear Implant--Auditory Function & Speech Perception

本项目的目标是研究儿童的言语、声音和音乐感知能力。 使用电和声联合刺激(EAS)的患者的听力，并将语音、声音 以及音乐感知对听觉区域潜在的心理物理能力的影响。目标是 将通过与6个目标相关的实验和分析来实现。AMI 1是低频的特征 听力评估对残听患者植入前后听力的影响 阈值，并通过获得非线性耳蜗处理的估计，频率选择性和 时间分辨率。目标2是评估单独的声刺激、电刺激的效果 在语音、语音和音乐识别测试中，单独和组合声学和电刺激。 AMI3是确定低频声学心理物理测量之间的关系 听力和语音、语音和音乐识别的测量。目标4是比较两个版本的性能 对EAS患者、单侧种植体患者和双侧种植体患者的测量 语音、语音和音乐识别。目标5是评估传递给电极的刺激的音调 相对于声学听觉区域中的纯音，并将电音高与 耳蜗内电极位置的计算机X线摄影评估。目标6是进行研究 以评估(A)是否将滤波带分配给 基于声电基音匹配的电极(如目标5)可产生更好的语音识别 以及(B)在低频表示中是否重叠 通过声音和电刺激是最大限度地发挥性能所必需的。

The goal of this project is to conduct a study of the speech, voice and music perception abilities of patients who hear with combined electric and acoustic stimulation (EAS) and to relate speech, voice and music perception to underlying psychophysical abilities in the region of acoustic hearing. The goal will be met through experiments and analyses relative to 6 aims. Ami 1is to characterize low frequency acoustic hearing in patients with residual hearing before and after implantation by assessing auditory thresholds and by obtaining estimates of nonlinear cochlear processing, frequency selectivity and temporal resolution. Aim 2 is to assess the effects of acoustic stimulation alone, electric stimulation alone and combined acoustic and electric stimulation on tests of speech, voice and music recognition. Ami 3 is to determine the relationships among the psychophysical measures of low-frequency acoustic hearing and the measures of speech, voice and music recognition. Aim 4 is to compare the performance of EAS patients, patients with unilateral implants and patients with bilateral implants on measures of speech, voice and music recognition. Aim 5 is to assess the pitch of stimulation delivered to electrodes relative to that of pure tones in the region of acoustic hearing and to relate electrical pitch to computerized radiography assessment of electrode position in the cochlea. Aim 6 is to conduct studies of filter-band-to-electrode assignments in order to assess (a) whether assigning filter-bands to electrodes based on acoustic-electric pitch matching (as in Aim 5) produces better speech recognition than a standard assignment of filter bands and (b) whether overlap in representation of low frequencies by acoustic and electric stimulation is necessary for maximum levels of performance.