![]() The other three are semicircular ducts, located in the three planes of space and filled with a liquid that moves as we move the head making turns in any direction, and have sensors that move by the movement of this liquid, informing the brain of the direction and angular velocity of our head. For example, if we travel by car with our eyes closed, we can know perfectly if our movement is forward or backward, and if we get on an elevator, it informs us if the elevator goes up or down. The vestibular nerve is located in our head, next to the auditory nerve, and as such, hardly anyone knows that it exists until it fails.Ī vestibular nerve consists of five receptors, two are, the Utricle and the Saculo, where there are small crystals that move on some receptor cells specialized in detecting linear acceleration, they send information to our brain where our head is going. The vestibular nerve is very important in our development since childhood, it played a vital role when we were learning to walk, run, ride a bike, skate, etc. It occurs in situations where the distance between a person and the fixed object (the ground) is so large that there is no reference to the visual and vestibular system (they fail to calculate that distance) that a sensory incongruity is created and one needs to touch the ground, crouch or sit down to add sensory references and the situation gives way.Īs stated above, vertigo is a symptom of different diseases that usually affect the inner ear and/or the vestibular nerve (balance nerve). ![]() It is presented as a set of subjective sensations, dizziness, instability, loss of balance and fear of falling from height. Vertigo at height : It is a physiological dizziness, it is not a disease as such, and it is suffered by a significant percentage of the population, about 10%. Symptoms that we should not call vertigo, but sometimes accompany vertigo or are confused with it are: Vertigo is the result of the brain working to resolve the confusion. When there is an alteration in the inner ear, the brain receives signals from it that is not consistent with what the eyes and sensory nerves are perceiving. Dizziness is the illusory sensation of movement. These include: vision, inner ear and body sensory system. The balance depends on a combination of signals emitted to the brain from various sensory systems. The characteristics of dizziness and its triggers provide clues about the causes, as well as the duration and associated symptoms. Instability is a sensation of floating or walking on a soft unstable ground, it may also accompany vertigo.ĭizziness can have multiple causes, from problems in the inner ear to an adverse effect of medication. Its origin is multifactorial due to the affectation of one or more of the systems of equilibrium. It is a sensation of displacement to the sides or to one side. The imbalance must not be confused with vertigo. It is due to an incongruity of visual, vestibular and sensory stimuli. It is best known as what we call motion sickness, which is what happens to some people when travelling by car, ship, plane, and in virtual reality environments. The symptoms that define dizziness are abdominal and general discomfort, nausea, yawning, cold sweating, paleness, and that can end with a picture of vomiting. ![]() Dizziness is one of the most frequent conditions for which a person turns to their doctor when this is very frequent or constant, it can significantly affect a person’s daily life.ĭizziness is not exactly vertigo, but sometimes it accompanies it. When dizziness creates a false feeling that our environment rotates or moves it is called vertigo. Dizziness is a term used to define a wide range of sensations, such as fainting, weakness, loss of balance, among others.
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