31 32 In quadrupeds, the dorsal-side-up body orientation during standing is maintained due to a 33 postural system that is driven by feedback signals coming mainly from limb mechanoreceptors. 34 In caudally decerebrated (postmammillary) rabbits, the efficacy of this system is considerably 35 reduced. In this paper we report that the efficacy of postural control in these animals can be 36 restor...

The purpose of the present study was to evaluate the influence of very low ambient illumination and complete darkness on the postural sway of young and elderly adults. Eighteen healthy young participants aged 23.8 ± 1.5 years and 26 community-dwelling elderly aged 69.8 ± 5.6 years were studied. Each participant performed four tests while standing on a force platform in the following conditions:...

Analysis of the postural stability impairments in neurodegenerative diseases is a very demanding task. Age-related declines in posturographic indices are usually superimposed on effects associated with the pathology and its treatment. We present the results of a novel postural sway ratio (SR) analysis in patients with Parkinson's disease (PD) and age-matched healthy subjects. The sway ratios ha...

OBJECTIVES To compare balance in individuals with symptomatic knee osteoarthritis (OA) and in age-, gender- and body-mass-matched controls using simple clinical measures. METHODS Thirty-three people with OA and 33 controls participated. Static postural sway [antero-posterior (AP), lateral and total] was measured using a swaymeter on two different surfaces and under two visual conditions. Dyna...

This paper presents the use of anti-sway angle control approaches for a two-dimensional gantry crane with disturbances effect in the dynamic system. Delayed feedback signal (DFS) and proportional-derivative (PD)-type fuzzy logic controller are the techniques used in this investigation to actively control the sway angle of the rope of gantry crane system. A nonlinear overhead gantry crane system...

Previous studies have investigated the relationship between muscular tension, body posture, and voice quality. The aim of this paper is to study the postural pattern during voice production in healthy subjects compared with patients affected by voice disorders and in the same patients before and after vocal treatment by means of static posturography. Classic posturographic variables and spectra...

Sway reduction is very vital in a nonlinear oscillatory system such as a gantry crane. In this paper, a new design is proposed for active sway control of a gantry crane using an electrical ducted fan. The thrust force developed by the motor is used to cancel out payload oscillation. A dynamic model of the crane with a ducted fan is derived and simulated using Matlab. Performance of the proposed...

[Purpose] The purpose of this study was to examine the relationship between physical function and postural sway during local vibratory stimulation of middle-aged subjects in an upright position. [Subjects] The subjects were 25 healthy community-dwelling middle-aged people. [Methods] We measured postural sway using a Wii board while vibratory stimulations of 30, 60, or 240 Hz were applied to the...

[Purpose] This study evaluates the immediate effect of ankle eversion taping on dynamic and static balance of chronic stroke patients with foot drop. [Subjects and Methods] This study was conducted with nine subjects who were diagnosed with stroke. A cross-over randomized design was used. Each subject performed three interventions in a random order. Subjects were randomly assigned to an ankle e...