DISCRIMINATION OF NATURAL AND SYNTHETIC CALL VARIANTS

天然和合成呼叫变体的区别

基本信息

批准号：
6185131
负责人：
TIMOTHY F WRIGHT
金额：
$ 3.9万
依托单位：
UNIV OF MARYLAND, COLLEGE PARK
依托单位国家：
美国
项目类别：
财政年份：
2000
资助国家：
美国
起止时间：
2000-05-01 至
项目状态：
未结题

来源：
https://reporter.nih.gov/project-details/6185131
关键词：
Aves animal communication behavior auditory discrimination auditory stimulus behavioral /social science research tag psychoacoustics sound perception species difference vocalization

项目摘要

DESCRIPTION (Adapted from applicant's abstract): This study will examine the perception of natural and synthetic communication calls by two parrot species. Categorical perception is considered to occur when continuously varying stimuli are perceptually classified into a discrete group and there is increased discriminability of variants across categorical boundaries. In this project, three separate experiments will test whether either the yellow-nape amazon or the budgerigar 1) has categorical perception of yellow-nape amazon vocalizations, and if so 2) whether both species perceive similar categories in the same set of calls. The first experiment will test the basic auditory sensitivities of the yellow-nape amazon and compare them to available audiograms for the budgerigar and other bird species. The second experiment will compare the abilities of the two species to discriminate among novel variants of natural calls of the yellow-nape amazon and test whether either species has perceptual categories that correspond to previously defined acoustic categories. The third experiment will compare the abilities of the two species to discriminate between equally spaced synthetic variants and test for the existence of the sharp boundaries in discriminability between variants characteristic of categorical perception. In sum, these experiments will begin to address two general questions: first, whether natural calls are perceived in a categorical fashion by animals and, second, whether these categories are species-specific (restricted to a species own calls) or are general (found for both conspecific and heterospecific calls). The proposed project will provide valuable training in methods for signal synthesis, acoustic analysis, and psychoacoustical testing. It will also contribute to the development of a model system with great potential for the study of auditory perception and vocal learning.

描述（根据申请人的摘要改编）：本研究将检查两个鹦鹉对自然和合成通信的感知物种。当连续地认为发生分类感知在感知上，各种刺激被认为分为离散组，那里是在分类边界之间增加变体的可区分性。在这个项目，三个单独的实验将测试是否黄色拿破达亚马逊或Budgerigar 1）具有分类的感知黄色拿破达亚马逊发声，如果是这样2）两个物种是否感知相同的类别中的一组电话。第一个实验将测试黄色拿破达亚马逊的基本听觉敏感性并比较它们用于Budgerigar和其他鸟类的可用听力图。这第二个实验将将这两个物种的能力与歧视黄色拿破达亚马逊的新颖自然呼唤的新型变体并测试任何一种物种是否具有与以前定义的声学类别。第三个实验将比较这两个物种的能力区分均等间隔合成变体和测试是否存在尖锐边界分类感知的变体特征之间的可区分性。总而言之，这些实验将开始解决两个一般问题：首先，是否以类别方式看待自然呼叫动物，其次，这些类别是否特定于物种（仅限于物种自己的呼叫）或一般（发现独特和异种呼叫）。拟议的项目将提供在信号合成，声学分析和心理测试。它也将有助于发展模型系统具有巨大潜力用于研究听觉感知和声带学习。