Title :
A frequency domain hypothesis for human postural control characteristics (visual feedback)
Author :
Yoshizawa, Makoto ; Takeda, Hiroshi ; Ozawa, Masahiro ; Sasaki, Yoshio
Author_Institution :
Dept. of Knowledge-Based Inf. Eng., Toyohashi Univ. of Technol., Japan
Abstract :
Experiments performed to determine the effect of filtered visual feedback information in the frequency domain on human body sway during quiet standing is described. The three-dimensional visor display system (3D-VD) was used to filter the visual feedback information. A hypothesis is proposed to explain the test subject´s postural control characteristics and to estimate the different roles of the visual information used for postural stability in the low and high frequency domains. It is concluded that the hypothesis based on the spatial map in the brain is useful to explain the different roles of the visual feedback information in the frequency domain.<>
Keywords :
biocontrol; biomechanics; feedback; vision; filtered visual feedback; frequency domain hypothesis; high frequency domains; human postural control characteristics; low frequency domains; quiet standing; three-dimensional visor display system; visual information; Digital filters; Eyes; Feedback; Frequency domain analysis; Head; Humans; Low pass filters; Sensor systems; Testing; Ultrasonic variables measurement;
Journal_Title :
Engineering in Medicine and Biology Magazine, IEEE
