Mechanisms Underlying the Development of Auditory Perce*

听觉感知发展的机制*

• 批准号: 7320261
• 负责人: MIMI Le PHAN
• 金额: $ 7.5万
• 依托单位: RUTGERS, THE STATE UNIV OF N.J.
• 依托单位国家: 美国
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-12-06 至 2009-11-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7320261
• 关键词: Acoustics; Address; Adolescent; Adult; Affect; Animals; Auditory; Auditory Perception; Auditory area; Automobile Driving; Behavior; Behavioral; Birds; Brain; Categories; Characteristics; Chronic; Data; Development; Discrimination; Electrodes; Employee Strikes; Environment; Exposure to; Finches; Goals; Hearing; Human; Implanted Electrodes; Individual; Infant; Language; Lead; Learning; Light; Measurable; Measurement; Measures; Mediating; Memory; Methods; Metric; Modeling; Nature; Neurons; Output; Perception; Phase; Preparation; Process; Production; Property; Prosencephalon; Rate; Research; Role; Sensory; Sensory Process; Shapes; Signal Transduction; Songbirds; Speech; Stimulus; Testing; Thinking; Time; Training; auditory feedback; base; behavior influence; contextual factors; critical developmental period; experience; insight; male; neurophysiology; phonology; research study; response; sensory system; sound; success; vocal learning; vocalization; zebra finch

The P.I. proposes to study the role of auditory perception in mediating vocal learning in a songbird, the zebra finch. Young male zebra finches learn their songs from adult models through a process of imitation that resembles human speech acquisition. As in humans, normative vocal learning is dependent on two phases of learning. The first phase consists of establishing an auditory memory for the correct song model. The second phase involves of vocal practice in which the young bird compares, matches, and eventually refines his output to conform to the sensory representation of the model song (similar to the babbling that human infants prior to recognizable speech production). The proposed experiments will use neurophysiological and behavioral methods to further understand the mechanisms driving the formation of these auditory memories and how the quality of these memories relates to the quality of the vocal learning. Specifically, the P.I. will: 1) study the influence of the behavioral context during early exposure on auditory memory formation 2) measure in real time how perceptual tuning mediates auditory processing and discrimination for conspecific vocalizations 3) study the development of auditory memories as they relate to vocal imitation in young birds during the period of vocal learning. The research presented here will address fundamental questions regarding the interplay between vocal learning and perceptual tuning in development. Thus, the findings from this research will provide us with insights into the role of auditory experience on sensory development. The mechanisms by which auditory perception develops and affects vocal behavior has yet to been fully understood. By studying perception and vocal learning in a species that share similar characteristics to human speech learning, we hope to provide information on how listening to and interacting with relevant sounds during development affect the eventual processing and production of these signals

P.I.提议研究听觉感知在调节鸣禽斑马发声学习中的作用 芬奇。年轻的雄性斑胸草雀通过模仿的过程从成年模型那里学习歌曲 类似于人类的语音获取。与人类一样，规范的声音学习取决于两个阶段 的学习。第一阶段包括建立正确歌曲模型的听觉记忆。这 第二阶段涉及声音练习，幼鸟在此过程中进行比较、匹配并最终完善 他的输出符合模型歌曲的感官表征（类似于人类的胡言乱语） 在可识别的言语产生之前的婴儿）。拟议的实验将使用神经生理学和 行为方法来进一步了解驱动这些听觉记忆形成的机制 以及这些记忆的质量如何与声乐学习的质量相关。具体来说，P.I.将要： 1) 研究早期暴露期间的行为背景对听觉记忆形成的影响 2) 实时测量知觉调节如何介导听觉处理和同种辨别 发声 3) 研究与幼鸟声音模仿相关的听觉记忆的发展 在声乐学习期间。这里介绍的研究将解决基本问题 关于声音学习和发展中的知觉调整之间的相互作用。因此，研究结果 这项研究将使我们深入了解听觉体验对感官发展的作用。 听觉感知发展和影响发声行为的机制尚未完全阐明 明白了。通过研究具有相似特征的物种的感知和声音学习 人类语音学习，我们希望提供有关如何聆听相关内容并与之互动的信息 开发过程中的声音会影响这些信号的最终处理和产生