Hannan P J, West V C, Faulkner K D
Aust Orthod J. 1989 Oct;11(2):110-4.
A commercial tracking system has been adapted within the University of Melbourne, which is designed to track the movement of infra-red light emitting diodes (LEDs). The movement of the diodes was recorded by photosensimetric recording devices, and sent to a data recorder, then to a differential amplifier, and the signal stored on magnetic tape, or viewed on a cathode ray oscilloscope, or plotted on a chart plotter or an X-Y plotter. The equipment was used to track the movement of LEDs, which were secured to a lower arch face bow, which was in turn secured to the teeth via a universal joint, and an acrylic clutch. A method was established in a preliminary study, enabling recording of condylar movements in the sagittal plane, and results were presented for four subjects. Subsequently, condylar movements and joint sounds were recorded concurrently for two of these four subjects.
墨尔本大学采用了一种商业跟踪系统，该系统旨在跟踪红外发光二极管（LED）的运动。二极管的运动由光敏记录设备记录，然后发送到数据记录器，再到差分放大器，信号存储在磁带上，或在阴极射线示波器上查看，或在图表绘图仪或X-Y绘图仪上绘制。该设备用于跟踪固定在下部牙弓面弓上的LED的运动，而下部牙弓面弓又通过万向节和丙烯酸离合器固定在牙齿上。在一项初步研究中建立了一种方法，能够记录矢状面内的髁突运动，并给出了四名受试者的结果。随后，对这四名受试者中的两名同时记录了髁突运动和关节声音。
