Mechanisms Underlying the Development of Auditory Perce*

听觉感知发展的机制*

• 批准号: 7035222
• 负责人: MIMI Le PHAN
• 金额: $ 7.7万
• 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 2008-11-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7035222
• 关键词: Aves; human; learning; memory; songbirds

DESCRIPTION (provided by applicant): The PI 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 PI 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; and 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.

描述（由申请人提供）：PI 提议研究听觉感知在调节鸣禽斑胸草雀发声学习中的作用。年轻的雄性斑胸草雀通过类似于人类语言习得的模仿过程，从成年模型中学习歌曲。与人类一样，规范的声音学习依赖于两个学习阶段。第一阶段包括建立正确歌曲模型的听觉记忆。第二阶段涉及声音练习，幼鸟在其中进行比较、匹配并最终完善其输出，以符合模型歌曲的感官表征（类似于人类婴儿在可识别的言语产生之前的牙牙学语）。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音学习的质量相关。具体而言，PI 将： 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）实时测量感知调谐如何调节听觉处理和对同种发声的辨别； 3）研究听觉记忆的发展，因为它们与幼鸟在发声学习期间的发声模仿有关。这里提出的研究将解决有关发声学习和发展中知觉调整之间相互作用的基本问题。因此，这项研究的结果将为我们提供有关听觉体验对感官发展的作用的见解。听觉感知发展和影响发声行为的机制尚未完全了解。通过研究与人类语音学习具有相似特征的物种的感知和声音学习，我们希望提供有关在发育过程中聆听相关声音并与之交互如何影响这些信号的最终处理和产生的信息。