Vestibular stimulation is the
feedback/stimulus that human body receives due to any of its movement (linear
& rotational) in gravity. The intensity of these stimuli range from mild e.g.
nodding to severe e.g. sitting on a swing / any amusement ride.
The vestibular sense is
first to develop in the growing fetus, it develops only in 5 months in utero
and is stimulated by the movement of carrying mother’s body. It is the only
system that integrates sensory senses (acoustic, optic, tactile, smell) with
brain activities, proprioception and muscle reflexes & tone.
The vestibular system comprises of the two
components viz. the semi-circular canals, which respond to rotational
movements; and the otoliths, which are sensitive to linear accelerations.
The vestibular system sends signals primarily to the neural structures that
control eye movements and clarity in the vision; and to the muscles that keep
us upright in position. The brain uses information from the vestibular system
and from proprioception throughout the body to understand the
body's dynamics and kinematics (including its position and
acceleration) from moment to moment.
The activities of Vestibular
Apparatus can be summarized as:
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