SOURCE LOCALIZATION PERFORMANCE BY THE LATERAL LINE

侧线的源定位性能

• 批准号: 2909876
• 负责人: CHRISTOPHER B BRAUN
• 金额: $ 3.67万
• 依托单位: LOYOLA UNIVERSITY OF CHICAGO
• 依托单位国家: 美国
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-05-01 至
• 项目状态: 未结题
• 来源: https://reporter.nih.gov/project-details/2909876
• 关键词: behavioral /social science research tag; chemical stimulation; cobalt; ethology; fish; lateral line; neural information processing; neuropharmacology; psychophysics; space perception

The lateral line system is a mechanosensory hair cell system found in nearly all aquatic vertebrates. Like inner ear hair cell systems, the lateral line transduces mechanical stimulation. Rather than sensing postural changes or sound, however, the lateral line senses water motions that accompany acoustic stimuli in fluids. Yet the principles of stimulus encoding used by the two systems may be quite similar. This proposal develops a set of hypotheses that relate source localization to the spatial pattern of lateral line stimulation in much the same way that frequency discrimination is related to the pattern of stimulation in the cochlea. The specific aims of this proposal test these hypotheses by examining how the distance range and spatial discriminatory ability of the lateral line system is determined by the spatial distribution of sensory organs. Differences in lateral line structure are presented as they would affect the spatial pattern of lateral line excitation and thus provide a test of the excitation pattern model of lateral line source localization. This research promises to increase our understanding of how such spatial patterns of excitation along hair cell arrays are used by the nervous system to extract information about stimulus sources.

侧线系统是一种机械感觉毛细胞系统，在 几乎所有的水生脊椎动物。就像内耳毛细胞系统一样， 侧线换能器机械刺激。而不是感知 姿势变化或声音，然而，侧线感觉到水 流体中伴随声刺激的运动。然而，这些原则 这两个系统使用的刺激编码可能非常相似。这 Proposal提出了一组与源头定位相关的假设 对侧线刺激的空间模式的影响大体相同 频率歧视与刺激模式有关 在耳蜗里。这项提案的具体目标是对以下方面的考验 通过检验距离范围和空间如何 侧线系统的辨别能力取决于 感觉器官的空间分布。侧线差异 结构，因为它们会影响到 侧线激励，从而提供了激励的测试 横向线源定位的方向图模型。这项研究 承诺增加我们对这种空间模式是如何 神经系统使用沿毛细胞阵列的激发来 提取有关刺激来源的信息。