Measurement of 6 Degree of Freedom Movement of Human Head in Low Frequency Range

Motion-sickness is one of the major topics in research of human responses to vibration especially in the very low frequency range. For a study of this motion-sickness, measurements of 6-degree of freedom (DOF) movement of the human head for a long duration must be made. A safety helmet and accelerometers can be employed to measure the 6-DOF human head motion. This paper presents several problems and results in this approach.