Specific whole-body shifts induced by frequency-modulated vibrations of human plantar soles

This study sought to analyze the postural responses induced by separately or simultaneously vibrating with different frequencies the forefoot and rear foot zones of both soles in standing subjects. Stimulating each zone separately resulted in spatially oriented body tilts; their amplitude and veloci...

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Bibliographic Details
Published in:Neuroscience letters 1999-05, Vol.266 (3), p.181-184
Main Authors: Kavounoudias, Anne, Roll, Régine, Roll, Jean-Pierre
Format: Article
Language:English
Subjects:
Adult
Biological and medical sciences
Center of pressure (COP)
Female
Foot
Fundamental and applied biological sciences. Psychology
Humans
Linear Models
Male
Mechanoreceptors - physiology
Middle Aged
Plantar mechanoreceptors
Posture
Posture - physiology
Reference Values
Space life sciences
Vertebrates: body movement. Posture. Locomotion. Flight. Swimming. Physical exercise. Rest. Sports
Vibration
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Summary:This study sought to analyze the postural responses induced by separately or simultaneously vibrating with different frequencies the forefoot and rear foot zones of both soles in standing subjects. Stimulating each zone separately resulted in spatially oriented body tilts; their amplitude and velocity varied linearly according to the frequency, and their direction was always opposite to the plantar site vibrated. When the two zones were each co-stimulated at different frequencies, the parameters of the postural responses depended on the frequency difference. When this frequency difference was zero, no clearly oriented body tilts occurred. We concluded that the change in the relative pressures evoked by differently co-vibrating these zones gave rise to regulative postural adjustments able to cancel the simulated body deviation.
ISSN:0304-3940
1872-7972
DOI:10.1016/S0304-3940(99)00302-X