COMPARATIVE STUDY OF SOUND LOCALIZATION

拟议的研究需要行为分析的变化， 哺乳动物的声音定位能力。 这个的主要目标 研究包括确定所涉及的选择性压力 听觉和声音定位的进化。 过程中 我们还希望通过这项研究来确定一种缺乏使用 双耳强度差异提示定位声音，哪一个更重要 便于研究神经解剖学和电生理学基础 这种特殊的能力缺失 最后，调查的变化， 中央听觉系统在偶蹄目和奇蹄目之间将是 持续期间内的 短期目标涉及行为评估， 听力和声音定位能力（自由场和使用 耳机）在五种哺乳动物：黄鼠狼，獾，山羊，绵羊， 还有猪 每一个物种都是根据生态， 已知或怀疑影响的系统和解剖学因素 定位声音的能力。 通过这样的比较分析， 哺乳动物的声音定位，希望获得有关信息 影响听力发育和声音定位的因素 伙计

The proposed research entails the behavioral analysis of the variation in sound-localization ability among mammals. The primary goal of this research consists of the determination of the selective pressures involved in the evolution of hearing and sound localization. In the course of the study we also hope to identify a species lacking the ability to use the binaural intensity difference cue to localize sound and which would be more convenient for studying the neuroanatomy and electrophysiology underlying this peculiar lack of ability. Finally, a survey of the variation in the central auditory system among Artiodactyls and Perissodactyls will be continued. The short-range goals concern the behavioral assessment of hearing and sound localization ability (both free field and using headphones) in five species of mammals: weasels, badgers, goats, sheep, and pigs. Each species has been carefully selected based on ecological, phyletic, and anatomical factors known or suspected to influence the ability to localize sound. Through such a comparative analysis of mammalian sound localization, it is hoped to gain information concerning the factors influencing the evloution of hearing and sound-localization in man.