Measurement of bio-physical signals for posture movement on the transformation system

Abstract

A signal transformation system of posture movement for the stable state was designed in order to measure the bio-physical signal. To estimate the subject in a stable state on the basis of the bio-physical signal in the posture movement, the conditions of vision, vestibular, somatosensory apparatus and the central nervous system (CNS) were detected. Based on the vision condition, there was a greater average variation (Vi-αAVG-MAX and Vi-αAVG-MIN) in position with eyes closed and eyes opened (PC and PO), which was 27.11 ± 6.36 units. The vestibular condition showed a slightly larger average variation (Ve-αAVG-MAX and Ve-αAVG-MIN) in the body position with PC and PO, which was 6.60 ± 1.65 units. The somatosensory condition demonstrated a lower average variation (So-αAVG-MAX and So-αAVG-MIN) in position with PC and PO that amounted to 3.653 ± 2.424 units. The CNS condition was confirmed to indicate very little average variation (C-αAVG-MAX and C-αAVG-MIN) in body position with PC and PO that was at 0.401 ± 0.56 units. As the model depends on the bio-physical transformation system of posture movement, the average values of these perturbations were computed (0.01–2 Hz, range of Fourier frequency). The system consists of a data algorithm, an acquisition system, a data signal processing unit and a network system for the evaluated stability.