CORTICAL PROCESSING OF COMMUNICATION SOUNDS

通信声音的皮质处理

• 批准号: 2127177
• 负责人: JAGMEET S. KANWAL
• 金额: $ 10.7万
• 依托单位: WASHINGTON UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-07-01 至 1996-04-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/2127177
• 关键词: Chiroptera; action potentials; animal communication behavior; audiometry; auditory cortex; auditory discrimination; auditory stimulus; auditory threshold; behavioral habituation /sensitization; binaural hearing; brain mapping; loudness; neural information processing; sonar; sound frequency

DESCRIPTION: (Adapted From The Applicant's Abstract.) Communication is the major function of the auditory system in almost all species of higher vertebrates but little is known about the neural processing of communication sounds in any of these species. Mustached bats, Pteronotus parnelli, emit a diverse array of complex communication sounds (calls) as well as highly stereotyped biosonar pulses. Among mammals, the mustached bat's auditory cortex is the best studied and contains several areas that are specialized for processing biosonar information. The processing of calls in its auditory cortex, however, has not been studied at all. The aim of this project is to study the processing of calls in the well developed and highly organized auditory cortex of the mustached bats. This will be accomplished by characterizing single cortical neurons with computer-controlled calls and call components that are shifted in the frequency, intensity and time domains. Cortical specializations for call processing will be explored in terms of facilitation evoked by two or more call components. "Tuning" of call specialized neurons will be measured as a function of parameters of the most effective elements in the calls. These studies will be accompanied by a mapping of the specialized neurons, in any, within each cortical area. Population coding of calls within and among hierarchically equivalent cortical areas will also be tested by correlating a population response vector with a stimulus vector obtained from multiple physical parameters characterizing a call. This project will thus elucidate the common auditory processes that may underlie communication sound processing in all mammals.

描述：（改编自申请人的摘要。）沟通是 几乎所有高等物种的听觉系统的主要功能 脊椎动物，但人们对脊椎动物的神经处理知之甚少 这些物种中的任何一个都会发出交流声音。 小胡子蝙蝠，Pteronotus parnelli，发出各种复杂的通信声音（呼叫），如 以及高度定型的生物声纳脉冲。 在哺乳动物中，有胡须的 蝙蝠的听觉皮层是研究最深入的，包含几个区域 专门用于处理生物声纳信息。 的处理 然而，听觉皮层的叫声尚未被研究过。 这 该项目的目的是研究井中呼叫的处理 小胡子蝙蝠的听觉皮层发达且组织严密。 这 将通过表征单个皮层神经元来完成 计算机控制的呼叫和呼叫组件在 频率、强度和时域。 呼叫的皮质特化 将根据两个或多个引起的促进来探索处理 调用组件。 呼叫专用神经元的“调整”将被测量为 调用中最有效元素的参数函数。 这些研究将伴随着特殊神经元的映射， 在任何一个皮质区域内。 和 内呼叫的总体编码 等级等效的皮质区域之间也将通过以下方式进行测试 将群体响应向量与获得的刺激向量相关联 来自表征呼叫特征的多个物理参数。 该项目将 从而阐明可能潜在的常见听觉过程 所有哺乳动物的通讯声音处理。