SPOKEN WORD RECOGNITION BY ADULT COCHLEAR IMPLANT USERS

成人人工耳蜗使用者的口语单词识别

• 批准号: 2733624
• 负责人: Karen Iler Kirk
• 金额: $ 8.47万
• 依托单位: INDIANA UNIV-PURDUE UNIV AT INDIANAPOLIS
• 依托单位国家: 美国
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-07-01 至 2001-06-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/2733624
• 关键词: attention; audiometry; auditory discrimination; auditory stimulus; auditory threshold; behavioral /social science research tag; clinical research; cochlear implants; human middle age (35-64); human subject; memory; neural information processing; speech; speech recognition; visual perception; vocabulary; voice; young adult human (21-34)

This proposal for an MCDSA requests support for a program of research on adult cochlear implant (CI) users. The long-term goal of this project is to obtain new knowledge about the underlying perceptual processes used in spoken work recognition in this clinical population. Specifically, this research focuses on the processes of perceptual normalization, lexical discrimination, auditory-visual integration and perceptual learning in listeners with CIs. We are also interested in how these perceptual processes are influenced by the type of signal processing strategy employed by the CIs. Comparisons will be carried out between the SPEAK strategy used in the Nucleus CI and the CIS strategy implemented in the Clarion CI. Research is also directed toward the study of individual differences in speech perception skills among CI listeners. The results of the four experiments on perceptual processing of spoken words will contribute new knowledge to current models of word recognition and provide a better understanding of the central auditory processes used by CI listeners. Experiment I on perceptual normalization deals with how listeners with CIs cope with different sources of stimulus variability due to difference in talkers, speaking rates, and speech styles. Experiment II, which is concerned with the process of lexical discrimination, focuses on how listeners with CIs make fine phonetic discriminating among acoustically similar words. Experiment III examines the use of multimodal information in speech perception and spoken work recognition and explores how listeners with CIs integrate visual and auditory speech inputs. Experiment IV examines the process of perceptual learning of novel voices and investigates how this information in the speech signal is used to recognize words in novel sentences. In addition to the proposed program of research with adult CI users, this application also describes a training component for the PI which involves attendance in formal classes and research seminars in Cognitive Psychology and Cognitive Science at Indiana University, Bloomington, as well as hands-on research training experience under a mentor's direction. The results of this research will provide new perceptual information that will be useful in the design of new CI speech processing strategies and auditory- perceptual training methods for aural rehabilitation with this clinical population. The findings from this research project also have theoretical implications for our current understanding of spoken language processing in both normal-hearing and hearing-impaired listeners and will help us to assess several recent claims surrounding the importance of encoding stimulus variability and the use of detailed episodic information in speech perception and spoken word recognition.

MCDSA要求的这项提议请求支持针对有关的研究计划 成人人工耳蜗（CI）用户。 该项目的长期目标 是获取有关所使用的基本知觉过程的新知识 在这个临床人群中的口头认可。 具体来说， 这项研究重点是感知归一化的过程， 词汇歧视，听觉视觉整合和感知 在听众中学习独联体。 我们也对这些 感知过程受信号处理类型的影响 独联体采用的策略。 比较将在 核CI和CIS策略中使用的说话策略 在Clarion CI中实施。 研究也针对 研究CI中语音感知技能的个体差异 听众。 关于感知处理的四个实验的结果 口语的单词将为当前单词模型贡献新知识 识别并更好地理解中央听觉 CI听众使用的过程。 实验I对知觉归一化 探讨听众如何应对不同的刺激来源 由于说话者，口语率和语音的差异而导致的可变性 样式。 实验II，与词汇的过程有关 歧视，专注于与CI的听众如何使语音良好 在声学上相似的单词之间进行区分。 实验III检查 在语音感知和口头工作中使用多模式信息 识别并探讨与CI的听众如何整合视觉和 听觉语音输入。 实验IV检查了感知的过程 学习新颖的声音，并研究了这些信息如何 语音信号用于识别新句子中的单词。 此外 对于成人CI用户的拟议研究计划，此应用程序 还描述了PI的培训组件，涉及出席 在认知心理学的正式课程和研究研讨会中 印第安纳大学，布卢明顿的认知科学以及动手 在导师的指导下进行的研究培训经验。 结果 这项研究将提供新的感知信息 在新的CI语音处理策略和听觉的设计中 使用此临床的听觉康复的感知训练方法 人口。 该研究项目的发现也有 对我们当前对口语的理解的理论意义 在正常听力和听力受损的听众中进行处理，并将 帮助我们评估围绕重要性的一些最新主张 编码刺激变异性和详细情节的使用 语音感知和口语识别中的信息。

项目成果

Speech perception in children with cochlear implants: effects of lexical difficulty, talker variability, and word length.

人工耳蜗植入儿童的言语感知：词汇难度、说话者变异性和字长的影响。

• DOI: 10.1177/0003489400109s1234
• 发表时间: 2000
• 期刊: The Annals of otology, rhinology & laryngology. Supplement
• 作者: Kirk,KI;Hay-McCutcheon,M;Sehgal,ST;Miyamoto,RT
• 通讯作者: Miyamoto,RT