听觉皮层和脑干响应动态在安静和噪音中,在单方面聋人成年人中,有和没有耳
MinChul Park1, Greg A O'Beirne1, Philip A Bird2
1University of Canterbury, Private Bag 4800, Christchurch 8140, New Zealand; Eisdell Moore Centre, Auckland, New Zealand.
概括
没有耳的单侧聋成年人表现出噪音神经处理的改变,皮质听觉唤起的潜在幅度受刺激水平和信号对噪音比率的影响,与耳患者不同.
科学领域:
- 神经科学是一个神经科学.
- 听力学 听力学是指听力学.
- 听觉感知是一种听觉感知.
背景情况:
- 单侧耳聋 (UD) 带来了独特的听力挑战.
- 耳是患有听力损失的人群中常见的并发症.
- 了解单边聋,有或没有耳的听觉处理对于听觉康复至关重要.
研究的目的:
- 为了比较皮质听觉唤起潜力 (CAEP) 和听觉脑干反应 (ABR) 在单方面聋人成年人 (UD+T) 和没有耳 (UD-T) 中.
- 研究刺激水平和信号对噪声比 (SNR) 对这些群体的CAEP和ABR振幅的影响.
主要方法:
- 记录了CAEP和ABR,以响应60和45dB nHL的声音.
- 刺激是在安静和白噪声下进行的,以达到0和+10dB的SNR.
- 参与者包括8个UD-T,13个UD+T听众和13个双耳听力控制器.
主要成果:
- 在UD-T听者的CAEP振幅受到刺激水平和SNR的影响.
- 相比之下,UD+T听众和对照组的CAEP振幅主要受到SNR的影响.
- 在所有参与者群体中,ABR振幅始终反映了刺激水平和SNR的附加效应.
结论:
- 对大多数听众来说,信号与噪声比率,而不是绝对刺激水平,是CAEP噪声幅度的主要决定因素.
- 没有耳的单侧聋成年人表现出噪音的神经处理的改变,与耳和正常听力控制的人不同.
- 研究结果表明,在没有耳的单边聋人成年人中,神经噪音处理可能存在差异.
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