STRAIN IN THE FACIAL BONES OF MACACA FASCICULARIS

食蟹猴面部骨骼拉伤

• 批准号: 3482778
• 负责人: WILLIAM L HYLANDER
• 金额: $ 16.78万
• 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/3482778
• 关键词: behavioral medicine; bite strength; electromyography; electronic recording system; ethology; face; facial muscles; jaw movement; mastication; mechanical stress; muscle stress; oscillography; skeletal stress; skull; videotape /videodisc

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一个功能 对灵长类动物面部区域形态学的理解。 灵长类动物的面部主要由咀嚼器控制， 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 体内应变沿着面骨的食蟹猴使用 应变计 应变片（三个应变片元件 彼此具有已知的取向）将直接结合 用氰基丙烯酸酯粘合剂固定在面骨上 猕猴会 然后咬一个传感器（或咀嚼各种食物）， 将通过图表记录器和FM磁带记录器进行监控 录音机。 在一些提议的实验中， 各种颌肌（EMG）的活动将在 示波器，并记录在调频磁带录音机。 为了 为了精确地将动物的行为（下颌位置）与 骨应变（和EMG）数据、动物和图表记录器（或 示波器）进行录像。 两者的分屏显示 动物和图表记录仪（或示波器）将被生产 并记录下来。 最大值的大小和方向， 然后确定最小主应变。 经过表面 菌株已被表征沿沿着不同区域的 面（例如，眶后杆，前根的肿瘤， 眶上和眶下区域），内应力模式 将从表面应变模式中推断出来。 为此将 为了理解外力的性质（肌肉和 反作用力）作用于面部，以及猕猴面部骨骼 分散咀嚼应力。