A contractile cochlear frame - a possible new mechanism of sound adaptation

收缩性耳蜗框架——一种可能的声音适应新机制

• 批准号: DP0452018
• 负责人: Prof John Pettigrew
• 金额: $ 16.71万
• 依托单位: The University of Queensland
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2004
• 资助国家: 澳大利亚
• 起止时间: 2004-01-01 至 2007-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP0452018
• 关键词: contractile; cochlear; frame; possible; new

It is generally accepted that the rigid frame that harbours sensory structures in the hearing organs of modern higher vertebrates has only a passive supporting role. We have discovered a contractile component in the cartilaginous cochlear frame of the lizard Teratoscincus scincus and demonstrated that the tonus of the contractile tissue can be regulated. We hypothesize a new, previously unknown mechanism of slow mechanical adaptation in the vertebrate hearing organ. The aim of the proposed project is to examine this hypothesis in more detail.

人们普遍认为，现代高等脊椎动物听觉器官中容纳感觉结构的刚性框架只起被动的支持作用。我们发现了蜥蜴Teratoscincus scincus的软骨耳蜗框架的收缩组件，并证明了收缩组织的张力可以调节。我们假设一个新的，以前未知的机制缓慢的机械适应脊椎动物的听觉器官。拟议项目的目的是更详细地审查这一假设。