Neary C, Bate I J, Heller L F, Williams M
Sowerby Research Centre, British Aerospace PLC, Filton, Bristol, United Kingdom.
Aviat Space Environ Med. 1993 Jul;64(7):623-30.
The influence of visual tracking on head movement and on the head/helmet system was investigated for two different helmets (a motorcycle helmet and a flying helmet) under static laboratory conditions. Subjects visually refixated between pairs of illuminated targets located at various horizontal (up to 160 degrees) and vertical (up to 90 degrees) distances apart while head position and helmet slippage were measured in azimuth, pitch, roll, X, Y, and Z using a double magnetic coil system. Results showed that for both helmets, root mean square (RMS) head movement increased with refixation distance, especially in the main axis of refixation, and that RMS helmet slippage can be a function of RMS head motion. Further, large individual differences in the degree of head motion were found. These findings may have implications for designers and investigators of helmet-mounted avionics.
在静态实验室条件下，针对两种不同的头盔（一种摩托车头盔和一种飞行头盔），研究了视觉追踪对头部运动以及头部/头盔系统的影响。受试者在水平方向（可达160度）和垂直方向（可达90度）不同距离的成对照明目标之间进行视觉重新注视，同时使用双磁线圈系统在方位角、俯仰角、横滚角、X、Y和Z方向测量头部位置和头盔滑动情况。结果表明，对于两种头盔，均方根（RMS）头部运动随重新注视距离增加，尤其是在重新注视的主轴方向，并且RMS头盔滑动可能是RMS头部运动的函数。此外，还发现头部运动程度存在较大个体差异。这些发现可能对头盔式航空电子设备的设计者和研究人员具有启示意义。
