Mechanisms of vocal communication

声音交流的机制

• 批准号: 6678529
• 负责人: Marc D. Hauser
• 金额: $ 25.96万
• 依托单位: HARVARD UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-07-01 至 2006-06-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6678529
• 关键词: Callithricidae; animal communication behavior; animal developmental psychology; auditory discrimination; auditory feedback; auditory stimulus; behavior test; behavioral /social science research tag; behavioral habituation /sensitization; developmental neurobiology; environmental adaptation; experience; infant animal; loudness; mature animal; noise; phonology; sound perception; stimulus /response; visual stimulus; vocalization

DESCRIPTION (provided by applicant): Our greatest understanding of underlying mechanisms in animal communication has come from studies of highly specialized systems including electric fish, songbirds, bats, and humans. Noticeably absent from this list are the non-human primates. This proposal seeks funding to explore the mechanisms of vocal production and perception in cotton-top tamarin monkeys, focusing explicitly on the role of auditory feedback in the generation of species-typical signals, as well as the necessary and sufficient features for perceptual classification. We test five hypotheses focusing on the "combination long call" (CLC), a highly specialized signal designed to maintain contact and attract mates; we use four different methods to evaluate these hypotheses: vocal modification in response to changes in environmental acoustics, habituation discrimination, antiphonal calling, and phonotaxis. HI: Vocal production in tamarins is immune to interference, such that when they initiate a CLC, it continues to completion in the face of potentially competing acoustic or visual stimuli. If a competing stimulus causes interruption, production will terminate in between syllables as opposed to within a syllable. H2: Tamarins can use auditory feedback to modulate voice amplitude in response to ongoing increases ambient noise levels, but fail to exhibit such plasticity when changes arise during call production; infants show less plasticity than adults, thereby indicating the role of experience in vocal development. H3: The capacity for individual recognition in tamarins relies on only one syllable type within the CLC (i.e., the whistle), and specifically, a minimum number of whistles as opposed to total energy or syllable rate. H4: Based on comparative acoustic analyses of several other tamarin species, we hypothesize that cotton-top tamarins will show selective sensitivity to the order, duration, and fundamental frequency of syllable types within the CLC, preferentially approaching calls that fall within the natural range of variation for these parameters. H5: Studies reveal that recognition of the CLC is based on a suite of relevant acoustic features. If such features are either entirely absent or significantly perturbed, then processing time will increase, resulting in a longer latency to antiphonally call back to the signal. Results from this project will set the stage for future research on the underlying neurobiological circuitry and the extent to which it is homologous with humans.

描述（由申请人提供）：我们对动物交流中潜在机制的最大理解来自对电动鱼类，鸣禽，蝙蝠和人类等高度专业化系统的研究。 该列表中没有明显的是非人类灵长类动物。该提案寻求资金来探讨棉花棉素猴子中声乐产生和感知的机制，从而明确着眼于听觉反馈在物种典型信号的产生中的作用，以及感知分类的必要特征。我们测试了五个集中在“组合长呼叫”（CLC）上的假设，这是一个高度专业的信号，旨在保持接触并吸引伴侣；我们使用四种不同的方法来评估这些假设：响应环境声学的变化，习惯歧视，反音呼唤和PORNOTAXIS的声音修饰。 HI：田瘤中的声带产生不受干扰的影响，因此，当它们启动CLC时，面对潜在竞争的声学或视觉刺激，它将继续完成。如果竞争性刺激会导致中断，则产量将在音节之间终止，而不是音节内。 H2：塔玛林可以使用听觉反馈来调节语音振幅，以响应持续的环境噪声水平，但在呼叫产生期间发生变化时未能表现出这种可塑性；婴儿的可塑性比成年人少，因此表明经验在人声发展中的作用。 H3：tamarins中个体识别的能力仅依赖于CLC内的一个音节类型（即哨声），特别是最小数量的哨声，而不是总能量或音节率。 H4：基于对其他多种罗林种类的比较声学分析，我们假设棉花棉蛋白将对CLC内的音节类型的顺序，持续时间和基本频率显示出选择性的敏感性，优先接近这些参数自然变异范围内的呼叫。 H5：研究表明，对CLC的识别是基于一系列相关声学特征的。如果此类特征完全不存在或显着扰动，则处理时间将增加，从而导致更长的延迟性，以反应回到信号。该项目的结果将为未来的研究神经生物学回路及其与人同源的程度奠定阶段。