Effect of Chronological Age on Pulse Rate Discrimination in Adult Cochlear-Implant Users.
Effect of Chronological Age on Pulse Rate Discrimination in Adult Cochlear-Implant Users.
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年代年龄对成人人工耳蜗使用者脉搏率歧视的影响。
DOI：
10.1177/23312165211007367
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发表时间：
2021-01
影响因子：
2.7
通讯作者：
Goupell MJ
中科院分区：
文献类型：
--
作者：
Johnson KC;Xie Z;Shader MJ;Mayo PG;Goupell MJ
人工耳蜗 (CI) 用户严重依赖时间包络线索来理解语音。成年 CI 用户的时间处理能力可能会随着年龄的增长而下降。这项研究调查了年龄对辨别脉搏变化能力的影响。 20 名年龄在 23 岁至 80 岁之间的 CI 用户参与了速率歧视任务。他们试图区分每秒 100、200、300、400 或 500 个脉冲的基线速率增加 35% 的速率。刺激是通过直接刺激顶端（电极 20）、中部（电极 12）或基底位置（电极 4）而传递到单个电极的电脉冲序列。在每个电极上记录电诱发复合动作电位振幅增长函数，作为周围神经存活的估计。结果表明，与较低刺激率相比，在较高刺激率（例如每秒 500 个脉冲）下，时间脉搏率辨别性能随着年龄的增长而下降。经过统计分析以解释电诱发复合动作电位振幅增长函数的估计外周贡献后，较高刺激率下时间脉搏率辨别的与年龄相关的变化仍然存在。这些结果表明，核心因素对 CI 用户年龄相关的时间脉搏辨别能力的限制具有潜在贡献。
Cochlear-implant (CI) users rely heavily on temporal envelope cues to understand speech. Temporal processing abilities may decline with advancing age in adult CI users. This study investigated the effect of age on the ability to discriminate changes in pulse rate. Twenty CI users aged 23 to 80 years participated in a rate discrimination task. They attempted to discriminate a 35% rate increase from baseline rates of 100, 200, 300, 400, or 500 pulses per second. The stimuli were electrical pulse trains delivered to a single electrode via direct stimulation to an apical (Electrode 20), a middle (Electrode 12), or a basal location (Electrode 4). Electrically evoked compound action potential amplitude growth functions were recorded at each of those electrodes as an estimate of peripheral neural survival. Results showed that temporal pulse rate discrimination performance declined with advancing age at higher stimulation rates (e.g., 500 pulses per second) when compared with lower rates. The age-related changes in temporal pulse rate discrimination at higher stimulation rates persisted after statistical analysis to account for the estimated peripheral contributions from electrically evoked compound action potential amplitude growth functions. These results indicate the potential contributions of central factors to the limitations in temporal pulse rate discrimination ability associated with aging in CI users.
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影响因子：
2.8
作者：
Clinard CG;Tremblay KL;Krishnan AR
通讯作者：
Krishnan AR
影响因子：
2.4
作者：
Carlyon, Robert P.;Deeks, John M.
通讯作者：
Deeks, John M.
DOI：
10.1007/s10162-020-00753-4
发表时间：
2020-07-08
影响因子：
2.4
作者：
Anderson, Samira;Roque, Lindsey;Goupell, Matthew J.
通讯作者：
Goupell, Matthew J.
影响因子：
2.4
作者：
Feng, Lei;Oxenham, Andrew J.
通讯作者：
Oxenham, Andrew J.
影响因子：
7
作者：
Cecato, Juliana Francisco;Martinelli, Jose Eduardo;Aprahamian, Ivan
通讯作者：
Aprahamian, Ivan