Fast Audiogram Determination Using ASSRs

使用 ASSR 快速确定听力图

• 批准号: 7102750
• 负责人: Rafael E Delgado
• 金额: $ 42.86万
• 依托单位: INTELLIGENT HEARING SYSTEMS
• 依托单位国家: 美国
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-05-01 至 2009-07-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7102750
• 关键词: Fast; Audiogram; Determination; Using; ASSRs

DESCRIPTION (provided by applicant): The objective of this study is to develop a small portable handheld system capable of objectively determining audiogram configurations in infants using auditory steady-state responses (ASSRs). The system will address the need to obtain frequency-specific hearing threshold information in infants less than six months of age in a fast and efficient manner in order to fit hearing aids. Although current ABR technology can also be utilized to determine frequency specific thresholds, tone burst ABRs require expert interpretation and long or multiple testing sessions. Furthermore, current handheld screening devices do not provide frequency specific threshold information. ASSRs allow the application of objective frequency domain response detection analysis techniques that are capable of providing fast and accurate frequency specific hearing threshold information which is required for hearing aid fitting in infants. The proposed system will further improve current ASSR testing techniques by implementing advanced threshold estimation routines in order to reduce testing time. During Phase I, a fast audiogram estimation technique, CAST (Classification of Audiograms by Sequential Testing), was adapted from behavioral to ASSR testing and was shown to be very efficient and accurate. The ASSR testing module developed during Phase I was integrated into an evoked potential and otoacoustic emission testing system which has received FDA approval and is currently being distributed. During Phase II, further refinement of the ASSR CAST technique will be continued and a new ASSR Intensity-Ramping technique will also be refined and tested. The ASSR testing module will be implemented in a miniaturized handheld hardware unit providing greater portability for screening and testing applications at a very competitive price. The portable device will also provide standard ABR and OAE testing with in-ear calibration options for all testing modalities. A large-scale clinical trial will be conducted during the second year of Phase II involving three major testing sites.

描述(由申请人提供)：这项研究的目标是开发一种小型便携式手持系统，能够使用听觉稳态反应(ASSR)客观地确定婴儿的听力图配置。该系统将解决以快速和有效的方式获得六个月以下婴儿的特定频率听力阈值信息的需要，以便安装助听器。虽然目前的ABR技术也可以用来确定特定频率的阈值，但短音ABR需要专家解释和长时间或多次测试。此外，当前的手持筛选设备不提供频率特定的阈值信息。ASSR允许应用客观频域响应检测分析技术，该技术能够提供快速和准确的特定频率的听力阈值信息，这是婴儿配戴助听器所必需的。拟议的系统将通过实施先进的阈值估计例程来进一步改进现有的ASSR测试技术，以减少测试时间。在第一阶段，一种快速的听力图估计技术CAST(按顺序测试的听力图分类)被从行为测试改为ASSR测试，并被证明是非常有效和准确的。在第一阶段开发的ASSR测试模块被集成到诱发电位和耳声发射测试系统中，该系统已获得FDA的批准，目前正在分发。在第二阶段，将继续进一步改进ASSR铸造技术，并将改进和测试一种新的ASSR强度斜坡技术。ASSR测试模块将在微型手持硬件单元中实施，以极具竞争力的价格为筛选和测试应用提供更大的便携性。该便携式设备还将提供标准的ABR和OAE测试，并为所有测试模式提供入耳式校准选项。在第二阶段的第二年将进行一项大规模的临床试验，涉及三个主要试验点。