Quantitative analysis of body sway dynamics

Subjective perception of body sway.

OBJECTIVES AND METHOD The relation between body sway recorded through a stabilometric platform and the subjective report of steadiness was studied in 20 young and 20 elderly subjects and 20 neuropathic and 20 parkinsonian patients standing upright. The trials were performed under two stances (feet apart, feet together) and two visual conditions (eyes open, eyes closed). At the end of each trial...

A control systems analysis of electrically induced body sway

[Nonsequential vector analysis of body sway in Menière's disease].

Body sway test which examines the vestibulo-spinal reflex is sensitive for evaluating vestibular dysfunction in patients with vertigo, dizziness or unsteadiness. Body sway is usually evaluated by measuring the length and area of traces on the force platform. However, it is not necessarily possible to evaluate abnormal body sway with these indicators because there is a discrepancy between sway l...

Analysis of body sway in patients with cerebellar lesions.

By using the body sway test, we compared patients with the cerebellar type of spinocerebellar degeneration and with cerebellar hemisphere lesion with normal controls. In the X-direction, the Y-direction, the XY-direction, and the area, the patients with both spinocerebellar degeneration and with cerebellar hemisphere lesion swayed more than the normal controls either with eyes open or closed. I...

[Influence of neck vibration on body sway].

To investigate the influence of the cervical input to the equilibrium, the effect of neck vibratory stimulation on body sway was analyzed in 49 normal human subjects. Body perturbations during standing posture were recorded by a force platform with or without vibratory stimulus on the upper cervical region, and analyzed by computer. During the neck vibratory stimulation, the center of gravity w...