Biomaterial Database

Effects of optokinetic stimulation on the center of gravity during standing. 1980

K Taguchi, and M Yoda

The effects of horizontal as well as vertical optokinetic stimuli on the body's center of gravity in normal adults were investigated by using Jungtype optokinetic stimulator, a straingage platform and a minicomputer. The following results were obtained. With increasing speed of the optokinetic stimulation, the total length of the center of gravity gradually increased up to 60 deg/sec and then decreased. Meanwhile there was a standard two-phasic course in the position of the center of gravity. The ratio of the anteroposterior component to the lateral component in the movement of the center of gravity was below 1.00 in horizontal optokinetic stimulation, while in vertical stimulation it was over 1.00 and showed the maximum deviation of the position at about 60 deg/sec of optokinetic stimulation. The frequency spectra of the movement of the center of gravity showed some peaks at around 0.3 Hz and 1.0 Hz during optokinetic stimulation. The averaged divisional frequencies were calculated to show the change in the frequency spectra in digital values.

UI	MeSH Term	Description	Entries
D008297	Male		Males
D009039	Motion Perception	The real or apparent movement of objects through the visual field.	Movement Perception,Perception, Motion,Perception, Movement
D009949	Orientation	Awareness of oneself in relation to time, place and person.	Cognitive Orientation,Mental Orientation,Psychological Orientation,Cognitive Orientations,Mental Orientations,Orientation, Cognitive,Orientation, Mental,Orientation, Psychological,Orientations,Orientations, Cognitive,Orientations, Mental,Orientations, Psychological,Psychological Orientations
D011187	Posture	The position or physical attitude of the body.	Postures
D005133	Eye Movements	Voluntary or reflex-controlled movements of the eye.	Eye Movement,Movement, Eye,Movements, Eye
D005260	Female		Females
D006112	Gravitation	Acceleration produced by the mutual attraction of two masses, and of magnitude inversely proportional to the square of the distance between the two centers of mass. It is also the force imparted by the earth, moon, or a planet to an object near its surface. (From NASA Thesaurus, 1988)	G Force,Gravistimulation,Gravity,Force, G,G Forces,Gravities
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000293	Adolescent	A person 13 to 18 years of age.	Adolescence,Youth,Adolescents,Adolescents, Female,Adolescents, Male,Teenagers,Teens,Adolescent, Female,Adolescent, Male,Female Adolescent,Female Adolescents,Male Adolescent,Male Adolescents,Teen,Teenager,Youths
D000328	Adult	A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available.	Adults