Clinical Applications for Time-Compressed Speech Tests
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 78
- 主要终点
- Ability to Understand Speech in Noise Background
研究概览
简要总结
The purpose of this study is to determine the effects of age-related cognitive changes on hearing aid benefit based on hearing aid compression time constants.
The hypothesis is that people with poor working memory skills will benefit from slow time constants in hearing aid compression while those with good working memory skills will be able to benefit from more sophisticated compression algorithms with rapid time constants.
详细描述
Recent research has shown the relevance of cognitive function in hearing aid evaluation and the sensitivity of the aging auditory system to temporal distortions. The proposed investigation will examine the interaction of working memory and hearing aid compression method on speech recognition in background competition for older listeners. This interaction will be investigated for the following three forms of background competition:
- Competition from continuous speech-shaped noise.
- Competition from speech-modulated noise.
- Competition from a single interfering talker.
The goals of the study will be accomplished in two phases. In the first phase, 160 adults aged 50 through 75 years will be evaluated on a battery of tests to determine their cognitive capacity, time-compressed speech scores and their candidacy for inclusion in the second phase of the study. At the conclusion of this phase of testing, the participants will be divided into three groups:
- subjects with TCS test scores in the highest quartile (the HIGH group)
- subjects with TCS test scores in the lowest quartile (the LOW group)
- the remaining listeners
The second phase of the experiment will include listeners from the HIGH and LOW groups only. These subjects will be evaluated with respect to their speech recognition ability for three types of interference (steady-state noise, speech-modulated noise, single interfering talker). The HINT test (Nilsson, Soli, & Sumida, 1995; Nilsson et al., 1994) will be used to obtain the signal-to-noise ratio (SNR) at 50% recognition for the three masking conditions for each of three types of amplification:
研究设计
- 研究类型
- Interventional
- 分配方式
- Non Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- None
入排标准
- 年龄范围
- 50 Years 至 75 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Participants will be 50 to 75 years old.
- •Hearing loss will be limited to 40 dB HL from 250 Hz through 1000 Hz, and to 60 dB HL through 4000 Hz.
- •Hearing loss must be greater than 25 dB at two or more frequencies from 250 to 4000 Hz.
排除标准
- •None of the participants will be current or past hearing aid users; all will be free of ear disease.
- •Participants with conductive hearing losses, defined as air-bone gap greater than 15 dB, will be excluded.
- •The audiometric battery with acoustic reflex thresholds and decay measurements will be used to exclude anyone with evidence of a central disorder or a pathology other than a sensorineural loss. Those potential participants will be referred to a medical professional.
结局指标
主要结局
Ability to Understand Speech in Noise Background
时间窗: one year
Measure speech perception for sentences in background noise
次要结局
未报告次要终点