| Authors |
Young-Kyun Shin ; Gu-Bum Park |
| DOI |
http://dx.doi.org/10.5207/JIEIE.2013.27.8.021 |
| Keywords |
Standing Postural Control ; Horizontal Vibration ; Cross-correlation Analysis ; Coherence Function |
| Abstract |
The functional behaviors of human standing postural control were investigated when they were exposed to long-term horizontal vibration in the sagittal plane. For complexity of human postural control, a useful alternative method that has been based on a black-box approach was taken; that is, where the feedback mechanism was lumped into a single element. A motor-driven support platform was designed as a source of vibration. The AC Servo-controlled motors produced continuous anterior/posterior (AP) motion. The data were analyzed both in the time and frequency domain. The cross-correlation and coherency functions were estimated. Subjects behaved as a non-rigid pendulum with a mass and a spring throughout the whole period of the platform motion, as consistent with the plan chosen for this study. |