Investigation of the dynamic body balance by tracking a moving target on CRT using visual-guided stimulation.

通过使用视觉引导刺激在 CRT 上跟踪移动目标来研究动态身体平衡。

• 批准号: 05671447
• 负责人: YAMAMOTO Masahiko
• 金额: $ 1.34万
• 依托单位: Toho University School of Medicine
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05671447/
• 关键词: visual-guided stimulation; gravic body sway; body equilibrium; tracking ability; body tracking test; BTT; 視覚刺激; 追随機能; 平衡機能; Body Tracking Test(BTT)

In order to evaluate the function of the dynamic postural equilibrium, a computer-assisted evaluation system was constructed utilizing a gravicorder and a computer-controlled, dynamic target displayd on CRT.The system is constructed in such a way that the moving target on CRT is tracked by the volitional bodily movements, the gravitational center of which is simultaneously displayd on the same CRT.One is asked to attempt tracking the moving target by the center of body movement.This system is thus named the Body Tracking Test (BTT).System : Gravicorder is a G5500 model of ANIMA Co.and a PC 9801 personal computer (NEC) and a A/D converter (Analog-pro and ADX-98 model of Canopus C). A display stand was specially made by Hata Electric Co. ; i.e., the display stand can bring the moving target up to an appropriate height at the level of examinee's eyes.Method : The display stand was set in front of gravicorder and the eye level of the examinee.The moving target was displayd according to the … More BTT program.The examinee was to track the moving target on display by voluntary motions of the body. BTT programs contain several patterns, that include laterally moving, anterior-posterior moving, circling (clock-wise and counterclock-wise), and random stimulation.In this investigation, the stimulation used was in most case that of lateral movements.Analysis method : For evaluation of BTT,I have developed programs for data analysis.For this trial, the BTT was evaluated by comparing the moving distances of the target with that of bodily gravic movements for tracking the moving target. The test parameters. THE distance between the CRT and examinee, laterally moving target speed on CRT and the gain of displayd gravitational center as an output data from the gravicorder. The output power of gravicorder was 100mv/10Kg・cm.Results : Analysis of many BTT data of normal subjects revealed the following results.The most appropriate moving speed of target was 0.125Hz on the span of 15cm.2. The gain of the displayd target for tracking against a moving target was twice larger than that of moving target.3. Distance of the target from the gravicorder was 100 cm.According to the setup of these parameters, the test has been performed without major difficulty either of the examinee or the machine side and the results thus obtained were rather consistent.In the future, the BTT will be used to evaluate the quality and magnitude of disability brought about by the disorders of equilibrium, its rehabilitational functions and so forth.It will be utilized also to evaluate the equilibrium functions of an individual, when one's proficiency for specific sports is to be evaluated. Less

为了评价动态姿势平衡功能，本文利用重力仪和计算机控制的CRT动态靶，建立了一个计算机辅助评价系统，该系统由人体的自主运动跟踪CRT上的运动靶，在同一个CRT上同时显示物体的重心，要求用物体的运动中心来跟踪运动目标，这种系统被称为身体跟踪测试（BTT）系统：重力记录仪是ANIMA公司的G5500型和PC 9801个人计算机（NEC）以及A/D转换器（Canopus C的Analog-pro和ADX-98型）。Hata Electric Co.专门制作了一个展示架，即，方法：将显示架放置在重力仪前，与受检者眼平齐，根据显示架上的运动目标，将显示架上的运动目标显示在受检者眼平的适当高度上，并将显示架上的运动目标与受检者眼平齐，将显示架上的运动目标与受检者眼平齐，并将显示架上的运动目标与受检者眼平齐。 ...更多信息 BTT程序。受试者通过身体的随意运动来跟踪显示器上的移动目标。BTT程序包含几种模式，包括横向移动，前后移动，盘旋（顺时针和逆时针）和随机刺激。在本研究中，在大多数情况下使用的刺激是横向运动。分析方法：为了评估BTT，我开发了数据分析程序。对于这项试验，通过比较目标的移动距离与用于跟踪移动目标的身体重力运动的移动距离来评估BTT。测试参数。CRT与被检体之间的距离、CRT上横向移动目标的速度和显示器的重心增益作为重力仪的输出数据。重力仪输出功率为100 mv/10 Kg·cm。结果：通过对正常人多项BTT数据的分析，得出以下结论：在15 cm跨度上，靶的最佳移动速度为0.125Hz。对运动目标的跟踪，显示目标的增益比运动目标的增益大一倍.根据这些参数的设置，无论是受试者还是机器侧都没有太大的困难，因此获得的结果是相当一致的。将来，BTT将用于评估平衡障碍所带来的残疾的质量和程度。它的康复功能等。它也将被用来评估一个人的平衡功能，当一个人的熟练程度，为特定的运动是要评估。少