权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

A comparison of bottom-up and top-down training approaches: Brain responses as objective outcome measures of auditory training for improving speech perception in noise.

自下而上和自上而下训练方法的比较：大脑反应作为听觉训练的客观结果测量，以改善噪声中的言语感知。

基本信息

批准号：
397807552
负责人：
Dr. Annette Schumann, Ph.D.
金额：
--
依托单位：
Baycrest Health Sciences
依托单位国家：
德国
项目类别：
Research Fellowships
财政年份：
2017
资助国家：
德国
起止时间：
2016-12-31 至 2019-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/397807552?language=en
关键词：
comparison bottom up top down

项目摘要

The proposed project investigates the effectiveness of auditory training approaches for improving speech-in-noise understanding in people with hearing loss by gaining knowledge about neuronal processes underlying speech perception and its changes in ageing and after hearing loss. In recent years, several studies proved the efficacy of auditory training programs to improve speech understanding in noise in the hearing impaired. However, the individual benefit varies among the listeners, and still it is not clear which training method is the most effective. Research in hearing science identified multiple causes of speech-in-noise deficits at the auditory periphery, the stages of sound processing along the auditory pathway, cortical processes of perception and the cognitive brain. As different training approaches interact with processing at different levels, one aim in further research is to document and analyze these processes in speech perception and the training-related changes in the human brain. One opportunity is to disentangle the multi modal bottom-up and top-down neural mechanism contributing to changes in the auditory cortex. The key objective is to record brain responses with MEG in parallel to a training intervention to inform at which level the training to improve speech recognition in noise is effective. In the controlled randomized pre- to posttraining paradigm two training groups are conducted. Participants will be healthy older adults (age range 60 to 80 years) who experience normal aging related decline in hearing and speech-in-noise understanding, and however are not using hearing aids. Both groups will train over a period of 6 weeks with two different training programs (a bottom-up and a top-down). Evaluation of training outcome based on behavioral measures and auditory evoked responses before and at the end of the training as well as more than 2 months after the end of the training. As being part of fundamental research in auditory neuroscience, the study will generate important information to optimize individual care in the clinical auditory rehabilitation process.

拟议的项目调查听觉训练方法的有效性，以提高噪声中的语音理解听力损失的人通过获得有关神经元的过程中的语音感知及其变化的知识老化和听力损失后。近年来，一些研究证明了听觉训练计划对改善听力障碍者在噪声中的言语理解的有效性。然而，不同的听众的个人利益不同，仍然不清楚哪种训练方法是最有效的。听力科学研究确定了听觉外围噪音中言语缺陷的多种原因、沿着听觉通路的声音处理阶段、感知的皮质过程和认知大脑。由于不同的训练方法与不同层次的处理相互作用，进一步研究的一个目标是记录和分析这些过程中的语音感知和人类大脑中与训练相关的变化。一个机会是解开多模态自下而上和自上而下的神经机制，有助于听觉皮层的变化。主要目标是记录脑磁图的大脑反应，同时进行训练干预，以告知在哪一水平的训练，以提高语音识别在噪声中是有效的。在对照随机训练前到训练后的范例中，进行两个训练组。参与者将是健康的老年人（年龄范围60至80岁），他们经历了正常的听力和噪声中言语理解的老化相关下降，但没有使用助听器。两组都将接受为期6周的两种不同的训练计划（自下而上和自上而下）。在培训前和培训结束时以及培训结束后2个月以上，根据行为测量和听觉诱发反应评估培训结果。作为听觉神经科学基础研究的一部分，该研究将为临床听觉康复过程中的个体护理提供重要信息。