PERCEPTION OF HARMONIC SOUNDS BY BIRDS

鸟类对和谐声音的感知

• 批准号: 2709552
• 负责人: BERNARD S LOHR
• 金额: $ 3.15万
• 依托单位: UNIV OF MARYLAND, COLLEGE PARK
• 依托单位国家: 美国
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-03-30 至
• 项目状态: 未结题
• 来源: https://reporter.nih.gov/project-details/2709552
• 关键词: Aves; auditory discrimination; auditory nuclei; neural information processing; physical process; psychoacoustics; psychophysiology; songbirds; sound frequency; sound perception; vocalization

This research proposal addresses questions regarding the perception of complex harmonic sounds in birds. Estrildid finches, in particular the zebra finch (Taeniopygia guttata), have served as models for psychoacoustic, neuroanatomical, and neurophysiological studies of vocal production and perception. Much is known concerning the details of vocal learning, the motor control of song production, and the perceptual capabilities of this species in discriminating natural vocalizations. However, the specific acoustic characters involved in making such discriminations and their relationship to the acoustic properties present in natural calls, have received little or no study. In addition, the perceptual capabilities of related species of estrildids are not known. An additional estrildid species, the red-billed firefinch (Lagonosticta senegala), will be used as a comparison in these experiments. I will evaluate the hearing abilities of these two species of estrildid finches in relation to tones and complex harmonic sounds. Harmonic stimuli provide an important class of sounds that resemble closely the harmonic structure of natural zebra finch songs and calls, but not the pure-tonal songs and calls of several other estrildid species, including the red-billed firefinch. In order to evaluate how pitch cues may be processed, I will measure sensitivity to the relative phase structure of natural vocalizations, relative phase relationships of harmonic complexes, and perceptual categories formed by different types of harmonic mistunings using psychoacoustic programming and testing procedures.

本研究建议解决的问题，有关的看法 鸟类复杂的和声。 雌雀，尤其是 斑胸草雀（Taeniopygia guttata），曾作为 发声的心理声学、神经解剖学和神经生理学研究 生产和感知。关于声乐的细节， 学习，歌曲产生的运动控制，以及感知 这一物种在辨别自然发声的能力。 然而，在制作这种声音时所涉及的特定声学特性， 判别及其与声学特性的关系 目前在自然调用，已收到很少或根本没有研究。 在 此外，雌蝇科相关物种的感知能力 不知道。 另一种雌雀物种，红嘴雀 火烈鸟（Lagonosticta senegala），将被用作这些比较 实验我将评估这两个物种的听觉能力 关于雌雀的音调和复杂的和声。 谐波刺激提供了一类重要的声音， 接近自然界斑胸草雀鸣叫的和声结构， 但其他几只雌雀的纯音歌声和叫声 物种，包括红嘴火雀。 为了评估 音高线索可能会被处理，我将测量敏感性的相对 自然发声的相位结构，相对相位关系 和声复合体，以及由不同的 使用心理声学编程的谐波失调类型 试验程序.