Sandover J
Aviat Space Environ Med. 1978 Jan;49(1 Pt. 2):335-9.
Biodynamic measurements of human response to vibration may be nonlinear as a result of active control of the response, complex body movements, or tissue characteristics. Experiments using a random Gz stimulus were designed to explore the extent of these nonlinearities under normal conditions. The input transfer function was found to exhibit near-linearity, but transmission measures suffered from errors arising from complex body movements. The technique developed was found to be valuable for investigation of the variables affecting human response, and examples are given of the effects of body restraint and the relationship between intraabdominal pressure and input acceleration. It is argued that improved techniques and careful consideration of variables lead to a greater acceptance of the biodynamic approach.
由于对响应的主动控制、复杂的身体运动或组织特性，人体对振动响应的生物动力学测量可能是非线性的。设计了使用随机Gz刺激的实验来探究正常条件下这些非线性的程度。发现输入传递函数表现出近似线性，但传输测量受到复杂身体运动产生的误差影响。所开发的技术被发现对于研究影响人体响应的变量很有价值，并给出了身体约束的影响以及腹内压与输入加速度之间关系的示例。有人认为，改进的技术和对变量的仔细考虑会使生物动力学方法得到更广泛的接受。
