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FPGA System Design of a Cochlear Research Platform to Support Bimodal (EAS) and Variable Rate Electric Stimulation

机译：支持双峰（EAS）和可变速率电刺激的耳蜗研究平台的FPGA系统设计

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摘要

The extensive research and continuous improvements in sound processing strategies play a significant role in the advancement of cochlear implants and hearing aid technologies. Cochlear implants are characterized by different parameters such as electrode number, current level, pulse type, width, etc., in addition to a wide variety of signal processing strategies. This variety of choices and parameters provide researchers numerous challenges to implement novel strategies or perform perceptual studies. Therefore, the need for effective research tools and interfaces in the research community is growing rapidly. The existing interfaces either have limited functionalities or are not suitable for conducting a broad range of experiments. Portability, wearability, and ease of programmability limits existing research interfaces to benchtop/laboratory use only. Real world, long-term subject evaluations are needed to assess the true potential of novel sound processing strategies. There exists the compelling scientific evidence to support benefits obtained by bimodal hearing (i.e., CI in one ear and HA in the contralateral ear) for improved speech recognition in quiet and in noise, as well as for lateralization and localization issues. Studies support the speech performance improvement for high rate pulse stimulations. The work in this thesis extends the existing CCi-MOBILE platform's bilateral electric only capability to support both electric plus acoustic stimulation as well as variable rate electric stimulation. This research platform aims to perform acute laboratory based and chronic field studies without compromising portability and wearability.
机译：声音处理策略的广泛研究和不断改进在人工耳蜗和助听器技术的发展中起着重要作用。除了各种各样的信号处理策略外，耳蜗植入物还具有不同的参数，例如电极数量，电流水平，脉冲类型，宽度等。各种各样的选择和参数为研究人员实施新策略或进行感知研究提出了许多挑战。因此，对研究社区中有效的研究工具和接口的需求正在迅速增长。现有的接口功能有限或不适合进行广泛的实验。便携性，耐磨性和易编程性将现有的研究接口限制为仅在台式机/实验室使用。需要对现实世界进行长期的主题评估，以评估新型声音处理策略的真正潜力。存在令人信服的科学证据来支持双峰式听力（即一只耳朵的CI和对侧耳朵的HA）所获得的益处，以改善安静和噪音环境下的语音识别以及侧向化和局部化问题。研究支持针对高速率脉冲刺激的语音性能改善。本文的工作扩展了现有CCi-MOBILE平台的双边电功能，以支持电加声刺激以及可变速率电刺激。该研究平台旨在在不损害便携性和耐磨性的情况下进行基于实验室的急性和慢性田间研究。

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  • 作者

    Ammula, Sandeep.;

  • 作者单位

    The University of Texas at Dallas.;

  • 授予单位 The University of Texas at Dallas.;
  • 学科 Electrical engineering.;Communication.
  • 学位 M.S.E.E.
  • 年度 2017
  • 页码 67 p.
  • 总页数 67
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 康复医学;
  • 关键词

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