STRAIN IN THE FACIAL BONES OF MACACA FASCICULARIS

食蟹猴面部骨骼拉伤

• 批准号: 3482783
• 负责人: WILLIAM L HYLANDER
• 金额: $ 15.78万
• 依托单位: DUKE UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 1976
• 资助国家: 美国
• 起止时间: 1976-05-01 至 1991-11-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/3482783
• 关键词: Macaca fascicularis; behavioral medicine; biomechanics; bite strength; electromyography; electronic recording system; ethology; face; facial muscles; jaw movement; mastication; mechanical stress; muscle stress; oscillography; skeletal stress; skull

The research proposed here will contribute to a functional understanding of the morphology of the primate facial region. The primate face is dominated by the masticatory apparatus, and therefore, this research will analyze both the nature of masticatory forces and how these forces are dissipated throughout the primate face. This will be accomplished by an analysis of in vivo strain along the facial bones of Macaca fascicularis using strain gages. Rosette strain gages (three strain-gage elements with a known orientation to one another) will be bonded directly to facial bones with a cyanacrylate adhesive. The macaque will then bite a transducer (or chew various foods), and bone strain will be monitored on a chart recorder and recorder on an FM tape recorder. In some of the proposed experiments the electrical activity of the various jaw muscles (EMG) will be monitored on an oscilloscope, and also recorded on the FM tape recorder. In order to correlate precisely the animal's behavior (jaw position) with the bone strain (and EMG) data, the animal and the chart recorder (or oscilloscope) will be videotaped. A split-screen display of both animal and the chart recorder (or oscilloscope) will be produced and recorded. The magnitude and direction of the maximum and minimum principal strains will then be determined. After surface strains have been characterized along different regions of the face (e.g. the postorbital bar, anterior root of the zygoma, supraorbital and infraorbital region), patterns of internal stress will be inferred from patterns of surface strain. This will be done in order to understand the nature of external forces (muscle and reaction forces) acting on the face, and how macaque facial bones dissipate masticatory stress.

这里提出的研究将有助于功能性 了解灵长类动物面部区域的形态。 灵长类动物的面部由咀嚼器官控制，并且 因此，本研究将分析 咀嚼力以及这些力如何在整个过程中消散 灵长类动物的脸。 这将通过分析来完成 使用食蟹猴面部骨骼的体内应变 应变计。 花环应变计（三个应变计元件 彼此之间具有已知的方向）将直接粘合 用氰基丙烯酸酯粘合剂粘合到面部骨骼上。 猕猴会 然后咬换能器（或咀嚼各种食物），骨骼拉伤 将在图表录音机和调频磁带录音机上进行监听 录音机。 在一些建议的实验中，电 各种下颌肌肉 (EMG) 的活动将在 示波器，也记录在 FM 录音机上。 为了 将动物的行为（下巴位置）与 骨应变（和肌电图）数据、动物和图表记录仪（或 示波器）将被录像。 两者的分屏显示 将制作动物和图表记录仪（或示波器） 并记录下来。 最大值和最小值的大小和方向 然后将确定最小主应变。 后表面 菌株已在不同区域进行了表征 面部（例如眶后杆、颧骨前根、 眶上和眶下区域），内应力模式 将从表面应变的模式推断出来。 这将完成 为了了解外力（肌肉和 反作用力）作用在面部，以及猕猴面部骨骼如何作用 消除咀嚼压力。