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For Otheruses see Equilibrium (disambiguation)
Equilibrium is the maintenance of posture. Equilibrioception is the sense of balance that is used to maintain equilibrium.
In humans, equilibrioception is mainly sensed by the detection of acceleration, which occurs in the vestibular system. Other senses play roles as well, e.g. the visual system and proprioception. For instance, it is harder to stand on one foot with eyes closed than with eyes open.
- Main article: Vestibular system
- Main article: Balance disorder
When the sense of balance is interrupted it causes dizziness, disorientation and nausea. Balance can be upset by Meniere's disease, an inner ear infection, by a bad common cold affecting the head or a number of other medical conditions. It can also be temporarily disturbed by rapid and vigorous movement, for example riding on a merry-go-round. See also vertigo.
Some animals have better equilibrioception than humans, for example allowing a cat (as a quadruped using its inner ear and tail) to walk on a thin fence. http://www.sciencedaily.com/articles/e/equilibrioception.htm
Equilibrioception in many marine animals is done with an entirely different organ, the statocyst, which detects the position of tiny calcareous stones to determine which way is "up".
- Balance (ability)
- Benign paroxysmal positional vertigo
- Kinesthetic perception
- Perceptual motor processes
- Spatial orientation (perception)
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