ENCODING OF VOCAL SIGNALS IN THE AUDITORY SYSTEM

听觉系统中声音信号的编码

基本信息

批准号：
6329185
负责人：
ANDREW H BASS
金额：
$ 24.31万
依托单位：
CORNELL UNIVERSITY
依托单位国家：
美国
项目类别：
财政年份：
1974
资助国家：
美国
起止时间：
1974-09-01 至 2002-08-19
项目状态：
已结题

来源：
https://reporter.nih.gov/project-details/6329185
关键词：
acoustic nerve animal communication behavior auditory discrimination auditory feedback auditory pathways behavioral /social science research tag biocytin fish neural information processing psychoacoustics vocalization

项目摘要

DESCRIPTION: The central goal of the research proposed here is to understand how the vertebrate auditory system recognizes and interprets an enormous repertoire of species-typical vocal communication signals. The establishment of non-mammalian models of acoustic communication provide a unique and practical opportunity to identify the basic principles of neural operation that have led to the evolution of the complex auditory system of mammals including humans. Teleost fishes are the largest group of extant vertebrates and include vocalizing species with a simple vocal repertoire and a central auditory system resembling that of mammals. We propose that the plainfin midshipman fish (Porichthys notatus) has the vocal and acoustic behaviors, and underlying neural mechanisms and circuitry, both necessary and sufficient to solve acoustic problems that challenge all vertebrates including the separation of simultaneous (concurrent) vocalizations. Male midshipman fish vocalize simultaneously while they court females using multi-harmonic advertisement calls. Three questions will address mechanisms for the encoding and decoding of individual and concurrent vocal signals: (1) How and where are concurrent vocal signals segregated and encoded by the nervous system? Single unit recordings in the eighth nerve and auditory midbrain will characterize responses to both simple signals such as two tone beats and single multi-harmonic signals, and more complex stimuli such as two or more concurrent multi-harmonic signals. Central recordings together with neuroanatomical (biocytin) tract-tracing will map the circuitry that subserves the auditory coding mechanisms identified. (2) How and where do auditory and vocal pathways interact before, during and after self-vocalization? Central vocal-acoustic pathways recently delineated in midshipman will now guide single unit studies that test hypotheses of the proposed role of vocal-acoustic circuitry in auditory coding mechanisms. (3) How does the temporal structure of a vocal signal influence information transmission by auditory nerve fibers? Information transmission measures the amount of information present in an afferent spike train (information rate) and the quality of the stimulus representation by a spike train (coding efficiency). The simplicity (2-3 harmonics) and long duration (up to 115 minutes) of the midshipman s advertisement call presents a unique opportunity to test the hypothesis that a vocal signal s temporal structure is exploited for optimizing information transmission and hence the recognition of individual concurrent vocal signals.

描述：这里提出的研究的核心目标是了解脊椎动物听觉系统如何识别和解释物种典型的声音传播信号的巨大曲目。这建立非哺乳动物的声学交流模型提供了独特而实用的机会来确定神经的基本原理导致复杂听觉系统的演变的操作包括人类在内的哺乳动物。硬鱼是现存的最大群体脊椎动物，包括用简单的声乐曲目发声物种以及类似于哺乳动物的中央听觉系统。我们提出了这一点 Plainfin Midshipman Fish（Porichthys Notatus）具有声音和声学行为以及潜在的神经机制和电路，都是必要的足以解决挑战所有脊椎动物的声学问题包括同时（并发）发声的分离。男性中船员的鱼同时发声，而她们使用女性则使用多谐广告电话。三个问题将解决机制用于个人和并发声音信号的编码和解码：（1）如何和何处并发发声信号被隔离和编码神经系统？第八神经和听觉中的单个单元记录中脑将表征对两个简单信号的响应，例如两个音调节拍和单个多谐波信号，以及更复杂的刺激（例如两个或更多并发的多谐波信号。中央记录在一起随着神经解剖学（生物细胞素）的追踪，将绘制出的电路下台确定的听觉编码机制。（2）如何和何处听觉和人声途径在之前，之中和之后相互作用自我宣传？最近在现在将指导单位研究，以检验声带声电路在听觉编码机制中的拟议作用。（3）声音信号的时间结构如何影响信息通过听觉神经纤维传输？信息传输措施传入尖峰火车中存在的信息量（信息速率）和尖峰火车的刺激表示质量（编码效率）。简单性（2-3谐波）和延长持续时间（向上到115分钟）中船员的广告呼吁是独特的测试声音信号的时间结构的假设的机会被利用以优化信息传输，因此识别个人并发声音信号。

项目成果

期刊论文数量（23）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Hormone-induced vocal behavior and midbrain auditory sensitivity in the green treefrog, Hyla cinerea.

绿色树蛙荷尔蒙诱导的发声行为和中脑听觉敏感性。

DOI：
10.1007/bf00190402
发表时间：
1992
期刊：
Journal of comparative physiology. A, Sensory, neural, and behavioral physiology
影响因子：
0
作者：
Penna,M;Capranica,RR;Somers,J
通讯作者：
Somers,J

Representation of acoustic signals in the eighth nerve of the Tokay gecko. II. Masking of pure tones with noise.

托卡伊壁虎第八神经中声音信号的表示。

DOI：
10.1016/0378-5955(96)00104-9
发表时间：
1996
期刊：
Hearing research
影响因子：
2.8
作者：
Sams-Dodd,F;Capranica,RR
通讯作者：
Capranica,RR

Neural correlates of temperature coupling in the vocal communication system of the gray treefrog (Hyla versicolor).

灰树蛙（Hyla versicolor）声音交流系统中温度耦合的神经相关性。

DOI：
10.1016/0006-8993(85)91452-0
发表时间：
1985
期刊：
Brain research
影响因子：
2.9
作者：
Brenowitz,EA;Rose,G;Capranica,RR
通讯作者：
Capranica,RR

Bilateral syringeal coupling during phonation of a songbird.

鸣禽发声期间的双边注射耦合。

DOI：
10.1523/jneurosci.06-12-03595.1986
发表时间：
1986
期刊：
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子：
0
作者：
Nowicki,S;Capranica,RR
通讯作者：
Capranica,RR

Reformation of organized connections in the auditory system after generation of the eighth nerve.

第八神经产生后听觉系统组织连接的改革。